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Finding the Fourth Proportional to 93,720.66, 129,337.71 and 53,440.38

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Solution

The fourth proportional to 93,720.66, 129,337.71 and 53,440.38 is: 73,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,720.66 : 129,337.71 = 53,440.38 : x
  2. Step 2: Convert to fraction form
    93,720.66/129,337.71 = 53,440.38/x
  3. Step 3: Cross multiply
    93,720.66x = 129,337.71 × 53,440.38
  4. Step 4: Simplify right side
    93,720.66x = 6,911,856,370.73
  5. Step 5: Solve for x
    x = 6,911,856,370.73/93,720.66
  6. Step 6: Final answer
    x = 73,749.55

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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.