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Finding the Fourth Proportional to 92,856.11, 127,854.51 and 72,520.32

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Solution

The fourth proportional to 92,856.11, 127,854.51 and 72,520.32 is: 99,853.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,856.11 : 127,854.51 = 72,520.32 : x
  2. Step 2: Convert to fraction form
    92,856.11/127,854.51 = 72,520.32/x
  3. Step 3: Cross multiply
    92,856.11x = 127,854.51 × 72,520.32
  4. Step 4: Simplify right side
    92,856.11x = 9,272,049,978.64
  5. Step 5: Solve for x
    x = 9,272,049,978.64/92,856.11
  6. Step 6: Final answer
    x = 99,853.96

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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.