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Finding the Fourth Proportional to 84,506.86, 126,752.73 and 25,355.74

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Solution

The fourth proportional to 84,506.86, 126,752.73 and 25,355.74 is: 38,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,506.86 : 126,752.73 = 25,355.74 : x
  2. Step 2: Convert to fraction form
    84,506.86/126,752.73 = 25,355.74/x
  3. Step 3: Cross multiply
    84,506.86x = 126,752.73 × 25,355.74
  4. Step 4: Simplify right side
    84,506.86x = 3,213,909,266.17
  5. Step 5: Solve for x
    x = 3,213,909,266.17/84,506.86
  6. Step 6: Final answer
    x = 38,031.34

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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.