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Finding the Fourth Proportional to 355,265.20, 532,703.40 and 144,665.20

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Solution

The fourth proportional to 355,265.20, 532,703.40 and 144,665.20 is: 216,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,265.20 : 532,703.40 = 144,665.20 : x
  2. Step 2: Convert to fraction form
    355,265.20/532,703.40 = 144,665.20/x
  3. Step 3: Cross multiply
    355,265.20x = 532,703.40 × 144,665.20
  4. Step 4: Simplify right side
    355,265.20x = 77,063,643,901.68
  5. Step 5: Solve for x
    x = 77,063,643,901.68/355,265.20
  6. Step 6: Final answer
    x = 216,918.64

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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.