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Finding the Fourth Proportional to 355,126.20, 532,689.30 and 144,655.80

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Solution

The fourth proportional to 355,126.20, 532,689.30 and 144,655.80 is: 216,983.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,126.20 : 532,689.30 = 144,655.80 : x
  2. Step 2: Convert to fraction form
    355,126.20/532,689.30 = 144,655.80/x
  3. Step 3: Cross multiply
    355,126.20x = 532,689.30 × 144,655.80
  4. Step 4: Simplify right side
    355,126.20x = 77,056,596,842.94
  5. Step 5: Solve for x
    x = 77,056,596,842.94/355,126.20
  6. Step 6: Final answer
    x = 216,983.70

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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.