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Finding the Fourth Proportional to 93,938.76, 129,640.71 and 53,665.60

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Solution

The fourth proportional to 93,938.76, 129,640.71 and 53,665.60 is: 74,061.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,938.76 : 129,640.71 = 53,665.60 : x
  2. Step 2: Convert to fraction form
    93,938.76/129,640.71 = 53,665.60/x
  3. Step 3: Cross multiply
    93,938.76x = 129,640.71 × 53,665.60
  4. Step 4: Simplify right side
    93,938.76x = 6,957,246,486.58
  5. Step 5: Solve for x
    x = 6,957,246,486.58/93,938.76
  6. Step 6: Final answer
    x = 74,061.51

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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.