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Finding the Fourth Proportional to 389,702.38, 584,570.60 and 123,482.52

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Solution

The fourth proportional to 389,702.38, 584,570.60 and 123,482.52 is: 185,229.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,702.38 : 584,570.60 = 123,482.52 : x
  2. Step 2: Convert to fraction form
    389,702.38/584,570.60 = 123,482.52/x
  3. Step 3: Cross multiply
    389,702.38x = 584,570.60 × 123,482.52
  4. Step 4: Simplify right side
    389,702.38x = 72,184,250,805.91
  5. Step 5: Solve for x
    x = 72,184,250,805.91/389,702.38
  6. Step 6: Final answer
    x = 185,229.18

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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.