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Finding the Fourth Proportional to 357,139.58, 535,692.01 and 132,543.76

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Solution

The fourth proportional to 357,139.58, 535,692.01 and 132,543.76 is: 198,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,139.58 : 535,692.01 = 132,543.76 : x
  2. Step 2: Convert to fraction form
    357,139.58/535,692.01 = 132,543.76/x
  3. Step 3: Cross multiply
    357,139.58x = 535,692.01 × 132,543.76
  4. Step 4: Simplify right side
    357,139.58x = 71,002,633,207.36
  5. Step 5: Solve for x
    x = 71,002,633,207.36/357,139.58
  6. Step 6: Final answer
    x = 198,809.20

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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.