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Finding the Fourth Proportional to 93,689.92, 129,308.41 and 90,575.94

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Solution

The fourth proportional to 93,689.92, 129,308.41 and 90,575.94 is: 125,010.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,689.92 : 129,308.41 = 90,575.94 : x
  2. Step 2: Convert to fraction form
    93,689.92/129,308.41 = 90,575.94/x
  3. Step 3: Cross multiply
    93,689.92x = 129,308.41 × 90,575.94
  4. Step 4: Simplify right side
    93,689.92x = 11,712,230,785.66
  5. Step 5: Solve for x
    x = 11,712,230,785.66/93,689.92
  6. Step 6: Final answer
    x = 125,010.58

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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.