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Finding the Fourth Proportional to 314,843.40, 472,265.10 and 165,025.80

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Solution

The fourth proportional to 314,843.40, 472,265.10 and 165,025.80 is: 247,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,843.40 : 472,265.10 = 165,025.80 : x
  2. Step 2: Convert to fraction form
    314,843.40/472,265.10 = 165,025.80/x
  3. Step 3: Cross multiply
    314,843.40x = 472,265.10 × 165,025.80
  4. Step 4: Simplify right side
    314,843.40x = 77,935,925,939.58
  5. Step 5: Solve for x
    x = 77,935,925,939.58/314,843.40
  6. Step 6: Final answer
    x = 247,538.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.