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Finding the Fourth Proportional to 638,593.92, 881,265.60 and 352,124.28

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Solution

The fourth proportional to 638,593.92, 881,265.60 and 352,124.28 is: 485,934.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,593.92 : 881,265.60 = 352,124.28 : x
  2. Step 2: Convert to fraction form
    638,593.92/881,265.60 = 352,124.28/x
  3. Step 3: Cross multiply
    638,593.92x = 881,265.60 × 352,124.28
  4. Step 4: Simplify right side
    638,593.92x = 310,315,014,888.77
  5. Step 5: Solve for x
    x = 310,315,014,888.77/638,593.92
  6. Step 6: Final answer
    x = 485,934.81

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Double scale
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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.