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Finding the Fourth Proportional to 359,276.20, 539,108.70 and 148,935.40

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Solution

The fourth proportional to 359,276.20, 539,108.70 and 148,935.40 is: 223,483.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,276.20 : 539,108.70 = 148,935.40 : x
  2. Step 2: Convert to fraction form
    359,276.20/539,108.70 = 148,935.40/x
  3. Step 3: Cross multiply
    359,276.20x = 539,108.70 × 148,935.40
  4. Step 4: Simplify right side
    359,276.20x = 80,292,369,877.98
  5. Step 5: Solve for x
    x = 80,292,369,877.98/359,276.20
  6. Step 6: Final answer
    x = 223,483.69

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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.