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Finding the Fourth Proportional to 638,407.90, 957,533.82 and 165,053.62

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Solution

The fourth proportional to 638,407.90, 957,533.82 and 165,053.62 is: 247,560.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,407.90 : 957,533.82 = 165,053.62 : x
  2. Step 2: Convert to fraction form
    638,407.90/957,533.82 = 165,053.62/x
  3. Step 3: Cross multiply
    638,407.90x = 957,533.82 × 165,053.62
  4. Step 4: Simplify right side
    638,407.90x = 158,044,423,263.43
  5. Step 5: Solve for x
    x = 158,044,423,263.43/638,407.90
  6. Step 6: Final answer
    x = 247,560.26

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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.