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Finding the Fourth Proportional to 137,988.65, 207,063.28 and 58,020.83

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Solution

The fourth proportional to 137,988.65, 207,063.28 and 58,020.83 is: 87,065.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,988.65 : 207,063.28 = 58,020.83 : x
  2. Step 2: Convert to fraction form
    137,988.65/207,063.28 = 58,020.83/x
  3. Step 3: Cross multiply
    137,988.65x = 207,063.28 × 58,020.83
  4. Step 4: Simplify right side
    137,988.65x = 12,013,982,413.07
  5. Step 5: Solve for x
    x = 12,013,982,413.07/137,988.65
  6. Step 6: Final answer
    x = 87,065.00

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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.