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Finding the Fourth Proportional to 359,538.12, 539,289.68 and 134,881.05

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Solution

The fourth proportional to 359,538.12, 539,289.68 and 134,881.05 is: 202,315.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,538.12 : 539,289.68 = 134,881.05 : x
  2. Step 2: Convert to fraction form
    359,538.12/539,289.68 = 134,881.05/x
  3. Step 3: Cross multiply
    359,538.12x = 539,289.68 × 134,881.05
  4. Step 4: Simplify right side
    359,538.12x = 72,739,957,618.16
  5. Step 5: Solve for x
    x = 72,739,957,618.16/359,538.12
  6. Step 6: Final answer
    x = 202,315.01

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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.