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Finding the Fourth Proportional to 71,713.11, 107,110.88 and 64,948.60

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Solution

The fourth proportional to 71,713.11, 107,110.88 and 64,948.60 is: 97,007.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,713.11 : 107,110.88 = 64,948.60 : x
  2. Step 2: Convert to fraction form
    71,713.11/107,110.88 = 64,948.60/x
  3. Step 3: Cross multiply
    71,713.11x = 107,110.88 × 64,948.60
  4. Step 4: Simplify right side
    71,713.11x = 6,956,701,700.77
  5. Step 5: Solve for x
    x = 6,956,701,700.77/71,713.11
  6. Step 6: Final answer
    x = 97,007.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.