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Finding the Fourth Proportional to 99,560.65, 137,393.69 and 54,848.65

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Solution

The fourth proportional to 99,560.65, 137,393.69 and 54,848.65 is: 75,691.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,560.65 : 137,393.69 = 54,848.65 : x
  2. Step 2: Convert to fraction form
    99,560.65/137,393.69 = 54,848.65/x
  3. Step 3: Cross multiply
    99,560.65x = 137,393.69 × 54,848.65
  4. Step 4: Simplify right side
    99,560.65x = 7,535,858,415.02
  5. Step 5: Solve for x
    x = 7,535,858,415.02/99,560.65
  6. Step 6: Final answer
    x = 75,691.13

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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.