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Finding the Fourth Proportional to 359,378.55, 539,142.21 and 146,146.50

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Solution

The fourth proportional to 359,378.55, 539,142.21 and 146,146.50 is: 219,250.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,378.55 : 539,142.21 = 146,146.50 : x
  2. Step 2: Convert to fraction form
    359,378.55/539,142.21 = 146,146.50/x
  3. Step 3: Cross multiply
    359,378.55x = 539,142.21 × 146,146.50
  4. Step 4: Simplify right side
    359,378.55x = 78,793,746,993.77
  5. Step 5: Solve for x
    x = 78,793,746,993.77/359,378.55
  6. Step 6: Final answer
    x = 219,250.00

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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.