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Finding the Fourth Proportional to 653,225.25, 901,465.12 and 358,878.76

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Solution

The fourth proportional to 653,225.25, 901,465.12 and 358,878.76 is: 495,260.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,225.25 : 901,465.12 = 358,878.76 : x
  2. Step 2: Convert to fraction form
    653,225.25/901,465.12 = 358,878.76/x
  3. Step 3: Cross multiply
    653,225.25x = 901,465.12 × 358,878.76
  4. Step 4: Simplify right side
    653,225.25x = 323,516,684,678.49
  5. Step 5: Solve for x
    x = 323,516,684,678.49/653,225.25
  6. Step 6: Final answer
    x = 495,260.53

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Half scale
Find fourth proportional to 1,306,450.49, 1,802,930.24 and 717,757.52
Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.