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Finding the Fourth Proportional to 92,275.58, 138,580.23 and 85,248.02

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Solution

The fourth proportional to 92,275.58, 138,580.23 and 85,248.02 is: 128,026.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,275.58 : 138,580.23 = 85,248.02 : x
  2. Step 2: Convert to fraction form
    92,275.58/138,580.23 = 85,248.02/x
  3. Step 3: Cross multiply
    92,275.58x = 138,580.23 × 85,248.02
  4. Step 4: Simplify right side
    92,275.58x = 11,813,690,218.64
  5. Step 5: Solve for x
    x = 11,813,690,218.64/92,275.58
  6. Step 6: Final answer
    x = 128,026.18

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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.