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Finding the Fourth Proportional to 99,045.61, 148,552.54 and 31,568.87

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Solution

The fourth proportional to 99,045.61, 148,552.54 and 31,568.87 is: 47,348.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,045.61 : 148,552.54 = 31,568.87 : x
  2. Step 2: Convert to fraction form
    99,045.61/148,552.54 = 31,568.87/x
  3. Step 3: Cross multiply
    99,045.61x = 148,552.54 × 31,568.87
  4. Step 4: Simplify right side
    99,045.61x = 4,689,636,115.89
  5. Step 5: Solve for x
    x = 4,689,636,115.89/99,045.61
  6. Step 6: Final answer
    x = 47,348.25

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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.