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Finding the Fourth Proportional to 99,189.60, 136,813.65 and 63,363.66

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Solution

The fourth proportional to 99,189.60, 136,813.65 and 63,363.66 is: 87,398.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,189.60 : 136,813.65 = 63,363.66 : x
  2. Step 2: Convert to fraction form
    99,189.60/136,813.65 = 63,363.66/x
  3. Step 3: Cross multiply
    99,189.60x = 136,813.65 × 63,363.66
  4. Step 4: Simplify right side
    99,189.60x = 8,669,013,601.96
  5. Step 5: Solve for x
    x = 8,669,013,601.96/99,189.60
  6. Step 6: Final answer
    x = 87,398.41

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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.