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Finding the Fourth Proportional to 91,681.50, 137,545.29 and 26,017.50

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Solution

The fourth proportional to 91,681.50, 137,545.29 and 26,017.50 is: 39,032.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,681.50 : 137,545.29 = 26,017.50 : x
  2. Step 2: Convert to fraction form
    91,681.50/137,545.29 = 26,017.50/x
  3. Step 3: Cross multiply
    91,681.50x = 137,545.29 × 26,017.50
  4. Step 4: Simplify right side
    91,681.50x = 3,578,584,582.58
  5. Step 5: Solve for x
    x = 3,578,584,582.58/91,681.50
  6. Step 6: Final answer
    x = 39,032.79

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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.