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Finding the Fourth Proportional to 99,560.90, 137,394.04 and 54,848.90

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Solution

The fourth proportional to 99,560.90, 137,394.04 and 54,848.90 is: 75,691.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,560.90 : 137,394.04 = 54,848.90 : x
  2. Step 2: Convert to fraction form
    99,560.90/137,394.04 = 54,848.90/x
  3. Step 3: Cross multiply
    99,560.90x = 137,394.04 × 54,848.90
  4. Step 4: Simplify right side
    99,560.90x = 7,535,911,960.56
  5. Step 5: Solve for x
    x = 7,535,911,960.56/99,560.90
  6. Step 6: Final answer
    x = 75,691.48

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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.