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Finding the Fourth Proportional to 25,906,291.20, 38,859,436.80 and 25,159,795.20

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Solution

The fourth proportional to 25,906,291.20, 38,859,436.80 and 25,159,795.20 is: 37,739,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,906,291.20 : 38,859,436.80 = 25,159,795.20 : x
  2. Step 2: Convert to fraction form
    25,906,291.20/38,859,436.80 = 25,159,795.20/x
  3. Step 3: Cross multiply
    25,906,291.20x = 38,859,436.80 × 25,159,795.20
  4. Step 4: Simplify right side
    25,906,291.20x = 977,695,471,475,343.25
  5. Step 5: Solve for x
    x = 977,695,471,475,343.25/25,906,291.20
  6. Step 6: Final answer
    x = 37,739,692.80

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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.