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Finding the Fourth Proportional to 359,308.20, 539,156.70 and 148,967.40

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Solution

The fourth proportional to 359,308.20, 539,156.70 and 148,967.40 is: 223,531.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,308.20 : 539,156.70 = 148,967.40 : x
  2. Step 2: Convert to fraction form
    359,308.20/539,156.70 = 148,967.40/x
  3. Step 3: Cross multiply
    359,308.20x = 539,156.70 × 148,967.40
  4. Step 4: Simplify right side
    359,308.20x = 80,316,771,791.58
  5. Step 5: Solve for x
    x = 80,316,771,791.58/359,308.20
  6. Step 6: Final answer
    x = 223,531.70

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1.5x scale

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.