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Finding the Fourth Proportional to 354,931.20, 532,243.20 and 144,499.20

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Solution

The fourth proportional to 354,931.20, 532,243.20 and 144,499.20 is: 216,686.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,931.20 : 532,243.20 = 144,499.20 : x
  2. Step 2: Convert to fraction form
    354,931.20/532,243.20 = 144,499.20/x
  3. Step 3: Cross multiply
    354,931.20x = 532,243.20 × 144,499.20
  4. Step 4: Simplify right side
    354,931.20x = 76,908,716,605.44
  5. Step 5: Solve for x
    x = 76,908,716,605.44/354,931.20
  6. Step 6: Final answer
    x = 216,686.27

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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.