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Finding the Fourth Proportional to 372,017.80, 558,019.38 and 122,699.80

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Solution

The fourth proportional to 372,017.80, 558,019.38 and 122,699.80 is: 184,047.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,017.80 : 558,019.38 = 122,699.80 : x
  2. Step 2: Convert to fraction form
    372,017.80/558,019.38 = 122,699.80/x
  3. Step 3: Cross multiply
    372,017.80x = 558,019.38 × 122,699.80
  4. Step 4: Simplify right side
    372,017.80x = 68,468,866,322.12
  5. Step 5: Solve for x
    x = 68,468,866,322.12/372,017.80
  6. Step 6: Final answer
    x = 184,047.29

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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.