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Finding the Fourth Proportional to 99,262, 148,894.08 and 25,390

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Solution

The fourth proportional to 99,262, 148,894.08 and 25,390 is: 38,085.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,262 : 148,894.08 = 25,390 : x
  2. Step 2: Convert to fraction form
    99,262/148,894.08 = 25,390/x
  3. Step 3: Cross multiply
    99,262x = 148,894.08 × 25,390
  4. Step 4: Simplify right side
    99,262x = 3,780,420,691.20
  5. Step 5: Solve for x
    x = 3,780,420,691.20/99,262
  6. Step 6: Final answer
    x = 38,085.28

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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.