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Finding the Fourth Proportional to 93,115.25, 128,526.12 and 60,854.72

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Solution

The fourth proportional to 93,115.25, 128,526.12 and 60,854.72 is: 83,997.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,115.25 : 128,526.12 = 60,854.72 : x
  2. Step 2: Convert to fraction form
    93,115.25/128,526.12 = 60,854.72/x
  3. Step 3: Cross multiply
    93,115.25x = 128,526.12 × 60,854.72
  4. Step 4: Simplify right side
    93,115.25x = 7,821,420,592.98
  5. Step 5: Solve for x
    x = 7,821,420,592.98/93,115.25
  6. Step 6: Final answer
    x = 83,997.21

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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.