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Finding the Fourth Proportional to 482,918.80, 724,345.80 and 127,925.20

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Solution

The fourth proportional to 482,918.80, 724,345.80 and 127,925.20 is: 191,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,918.80 : 724,345.80 = 127,925.20 : x
  2. Step 2: Convert to fraction form
    482,918.80/724,345.80 = 127,925.20/x
  3. Step 3: Cross multiply
    482,918.80x = 724,345.80 × 127,925.20
  4. Step 4: Simplify right side
    482,918.80x = 92,662,081,334.16
  5. Step 5: Solve for x
    x = 92,662,081,334.16/482,918.80
  6. Step 6: Final answer
    x = 191,879.22

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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.