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Finding the Fourth Proportional to 359,997.20, 539,995.80 and 194,109.20

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Solution

The fourth proportional to 359,997.20, 539,995.80 and 194,109.20 is: 291,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,997.20 : 539,995.80 = 194,109.20 : x
  2. Step 2: Convert to fraction form
    359,997.20/539,995.80 = 194,109.20/x
  3. Step 3: Cross multiply
    359,997.20x = 539,995.80 × 194,109.20
  4. Step 4: Simplify right side
    359,997.20x = 104,818,152,741.36
  5. Step 5: Solve for x
    x = 104,818,152,741.36/359,997.20
  6. Step 6: Final answer
    x = 291,163.80

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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.