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Finding the Fourth Proportional to 359,681.10, 539,608.53 and 135,043.98

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Solution

The fourth proportional to 359,681.10, 539,608.53 and 135,043.98 is: 202,598.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,681.10 : 539,608.53 = 135,043.98 : x
  2. Step 2: Convert to fraction form
    359,681.10/539,608.53 = 135,043.98/x
  3. Step 3: Cross multiply
    359,681.10x = 539,608.53 × 135,043.98
  4. Step 4: Simplify right side
    359,681.10x = 72,870,883,533.15
  5. Step 5: Solve for x
    x = 72,870,883,533.15/359,681.10
  6. Step 6: Final answer
    x = 202,598.59

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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.