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Finding the Fourth Proportional to 93,671.52, 129,207.60 and 65,366.88

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Solution

The fourth proportional to 93,671.52, 129,207.60 and 65,366.88 is: 90,165.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,671.52 : 129,207.60 = 65,366.88 : x
  2. Step 2: Convert to fraction form
    93,671.52/129,207.60 = 65,366.88/x
  3. Step 3: Cross multiply
    93,671.52x = 129,207.60 × 65,366.88
  4. Step 4: Simplify right side
    93,671.52x = 8,445,897,684.29
  5. Step 5: Solve for x
    x = 8,445,897,684.29/93,671.52
  6. Step 6: Final answer
    x = 90,165.05

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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.