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Finding the Fourth Proportional to 482,901.30, 724,319.55 and 127,907.70

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Solution

The fourth proportional to 482,901.30, 724,319.55 and 127,907.70 is: 191,852.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,901.30 : 724,319.55 = 127,907.70 : x
  2. Step 2: Convert to fraction form
    482,901.30/724,319.55 = 127,907.70/x
  3. Step 3: Cross multiply
    482,901.30x = 724,319.55 × 127,907.70
  4. Step 4: Simplify right side
    482,901.30x = 92,646,047,705.54
  5. Step 5: Solve for x
    x = 92,646,047,705.54/482,901.30
  6. Step 6: Final answer
    x = 191,852.97

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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.