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Finding the Fourth Proportional to 91,897.98, 137,854.70 and 25,338.08

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Solution

The fourth proportional to 91,897.98, 137,854.70 and 25,338.08 is: 38,009.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,897.98 : 137,854.70 = 25,338.08 : x
  2. Step 2: Convert to fraction form
    91,897.98/137,854.70 = 25,338.08/x
  3. Step 3: Cross multiply
    91,897.98x = 137,854.70 × 25,338.08
  4. Step 4: Simplify right side
    91,897.98x = 3,492,972,601.01
  5. Step 5: Solve for x
    x = 3,492,972,601.01/91,897.98
  6. Step 6: Final answer
    x = 38,009.24

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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.