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Finding the Fourth Proportional to 98,294.05, 147,209.61 and 64,931.37

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Solution

The fourth proportional to 98,294.05, 147,209.61 and 64,931.37 is: 97,244.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,294.05 : 147,209.61 = 64,931.37 : x
  2. Step 2: Convert to fraction form
    98,294.05/147,209.61 = 64,931.37/x
  3. Step 3: Cross multiply
    98,294.05x = 147,209.61 × 64,931.37
  4. Step 4: Simplify right side
    98,294.05x = 9,558,521,654.47
  5. Step 5: Solve for x
    x = 9,558,521,654.47/98,294.05
  6. Step 6: Final answer
    x = 97,244.15

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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.