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Finding the Fourth Proportional to 355,207.20, 532,616.40 and 144,607.20

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Solution

The fourth proportional to 355,207.20, 532,616.40 and 144,607.20 is: 216,831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,207.20 : 532,616.40 = 144,607.20 : x
  2. Step 2: Convert to fraction form
    355,207.20/532,616.40 = 144,607.20/x
  3. Step 3: Cross multiply
    355,207.20x = 532,616.40 × 144,607.20
  4. Step 4: Simplify right side
    355,207.20x = 77,020,166,278.08
  5. Step 5: Solve for x
    x = 77,020,166,278.08/355,207.20
  6. Step 6: Final answer
    x = 216,831.66

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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.