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Finding the Fourth Proportional to 70,881.88, 97,819.52 and 39,053.20

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Solution

The fourth proportional to 70,881.88, 97,819.52 and 39,053.20 is: 53,894.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,881.88 : 97,819.52 = 39,053.20 : x
  2. Step 2: Convert to fraction form
    70,881.88/97,819.52 = 39,053.20/x
  3. Step 3: Cross multiply
    70,881.88x = 97,819.52 × 39,053.20
  4. Step 4: Simplify right side
    70,881.88x = 3,820,165,278.46
  5. Step 5: Solve for x
    x = 3,820,165,278.46/70,881.88
  6. Step 6: Final answer
    x = 53,894.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.