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Finding the Fourth Proportional to 109,712.76, 151,402.73 and 59,411.76

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Solution

The fourth proportional to 109,712.76, 151,402.73 and 59,411.76 is: 81,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,712.76 : 151,402.73 = 59,411.76 : x
  2. Step 2: Convert to fraction form
    109,712.76/151,402.73 = 59,411.76/x
  3. Step 3: Cross multiply
    109,712.76x = 151,402.73 × 59,411.76
  4. Step 4: Simplify right side
    109,712.76x = 8,995,102,658.10
  5. Step 5: Solve for x
    x = 8,995,102,658.10/109,712.76
  6. Step 6: Final answer
    x = 81,987.75

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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.