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Finding the Fourth Proportional to 334,139.52, 501,405.12 and 134,428.80

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Solution

The fourth proportional to 334,139.52, 501,405.12 and 134,428.80 is: 201,721.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,139.52 : 501,405.12 = 134,428.80 : x
  2. Step 2: Convert to fraction form
    334,139.52/501,405.12 = 134,428.80/x
  3. Step 3: Cross multiply
    334,139.52x = 501,405.12 × 134,428.80
  4. Step 4: Simplify right side
    334,139.52x = 67,403,288,595.46
  5. Step 5: Solve for x
    x = 67,403,288,595.46/334,139.52
  6. Step 6: Final answer
    x = 201,721.99

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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.