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Finding the Fourth Proportional to 83,989.08, 115,864.11 and 53,750.16

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Solution

The fourth proportional to 83,989.08, 115,864.11 and 53,750.16 is: 74,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,989.08 : 115,864.11 = 53,750.16 : x
  2. Step 2: Convert to fraction form
    83,989.08/115,864.11 = 53,750.16/x
  3. Step 3: Cross multiply
    83,989.08x = 115,864.11 × 53,750.16
  4. Step 4: Simplify right side
    83,989.08x = 6,227,714,450.76
  5. Step 5: Solve for x
    x = 6,227,714,450.76/83,989.08
  6. Step 6: Final answer
    x = 74,149.10

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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.