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Finding the Fourth Proportional to 927,747.80, 1,391,621.70 and 717,795.80

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Solution

The fourth proportional to 927,747.80, 1,391,621.70 and 717,795.80 is: 1,076,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,747.80 : 1,391,621.70 = 717,795.80 : x
  2. Step 2: Convert to fraction form
    927,747.80/1,391,621.70 = 717,795.80/x
  3. Step 3: Cross multiply
    927,747.80x = 1,391,621.70 × 717,795.80
  4. Step 4: Simplify right side
    927,747.80x = 998,900,211,448.86
  5. Step 5: Solve for x
    x = 998,900,211,448.86/927,747.80
  6. Step 6: Final answer
    x = 1,076,693.70

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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.