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Finding the Fourth Proportional to 92,292.90, 138,420.45 and 25,716.30

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Solution

The fourth proportional to 92,292.90, 138,420.45 and 25,716.30 is: 38,569.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,292.90 : 138,420.45 = 25,716.30 : x
  2. Step 2: Convert to fraction form
    92,292.90/138,420.45 = 25,716.30/x
  3. Step 3: Cross multiply
    92,292.90x = 138,420.45 × 25,716.30
  4. Step 4: Simplify right side
    92,292.90x = 3,559,661,818.34
  5. Step 5: Solve for x
    x = 3,559,661,818.34/92,292.90
  6. Step 6: Final answer
    x = 38,569.18

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1.5x scale

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.