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Finding the Fourth Proportional to 779,495.76, 1,169,276.16 and 247,005

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Solution

The fourth proportional to 779,495.76, 1,169,276.16 and 247,005 is: 370,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,495.76 : 1,169,276.16 = 247,005 : x
  2. Step 2: Convert to fraction form
    779,495.76/1,169,276.16 = 247,005/x
  3. Step 3: Cross multiply
    779,495.76x = 1,169,276.16 × 247,005
  4. Step 4: Simplify right side
    779,495.76x = 288,817,057,900.80
  5. Step 5: Solve for x
    x = 288,817,057,900.80/779,495.76
  6. Step 6: Final answer
    x = 370,517.80

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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.