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Finding the Fourth Proportional to 359,117.80, 538,676.61 and 92,905.18

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Solution

The fourth proportional to 359,117.80, 538,676.61 and 92,905.18 is: 139,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,117.80 : 538,676.61 = 92,905.18 : x
  2. Step 2: Convert to fraction form
    359,117.80/538,676.61 = 92,905.18/x
  3. Step 3: Cross multiply
    359,117.80x = 538,676.61 × 92,905.18
  4. Step 4: Simplify right side
    359,117.80x = 50,045,847,413.84
  5. Step 5: Solve for x
    x = 50,045,847,413.84/359,117.80
  6. Step 6: Final answer
    x = 139,357.75

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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.