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Finding the Fourth Proportional to 318,071.68, 477,127.68 and 104,853.76

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Solution

The fourth proportional to 318,071.68, 477,127.68 and 104,853.76 is: 157,287.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,071.68 : 477,127.68 = 104,853.76 : x
  2. Step 2: Convert to fraction form
    318,071.68/477,127.68 = 104,853.76/x
  3. Step 3: Cross multiply
    318,071.68x = 477,127.68 × 104,853.76
  4. Step 4: Simplify right side
    318,071.68x = 50,028,631,248.08
  5. Step 5: Solve for x
    x = 50,028,631,248.08/318,071.68
  6. Step 6: Final answer
    x = 157,287.29

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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.