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Finding the Fourth Proportional to 92,151.12, 138,058.80 and 64,011.68

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Solution

The fourth proportional to 92,151.12, 138,058.80 and 64,011.68 is: 95,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,151.12 : 138,058.80 = 64,011.68 : x
  2. Step 2: Convert to fraction form
    92,151.12/138,058.80 = 64,011.68/x
  3. Step 3: Cross multiply
    92,151.12x = 138,058.80 × 64,011.68
  4. Step 4: Simplify right side
    92,151.12x = 8,837,375,726.78
  5. Step 5: Solve for x
    x = 8,837,375,726.78/92,151.12
  6. Step 6: Final answer
    x = 95,900.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.