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Finding the Fourth Proportional to 99,594.86, 137,380.47 and 59,281.70

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Solution

The fourth proportional to 99,594.86, 137,380.47 and 59,281.70 is: 81,772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,594.86 : 137,380.47 = 59,281.70 : x
  2. Step 2: Convert to fraction form
    99,594.86/137,380.47 = 59,281.70/x
  3. Step 3: Cross multiply
    99,594.86x = 137,380.47 × 59,281.70
  4. Step 4: Simplify right side
    99,594.86x = 8,144,147,808.40
  5. Step 5: Solve for x
    x = 8,144,147,808.40/99,594.86
  6. Step 6: Final answer
    x = 81,772.77

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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.