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Finding the Fourth Proportional to 867,618.30, 1,300,649.85 and 773,139.90

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Solution

The fourth proportional to 867,618.30, 1,300,649.85 and 773,139.90 is: 1,159,016.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,618.30 : 1,300,649.85 = 773,139.90 : x
  2. Step 2: Convert to fraction form
    867,618.30/1,300,649.85 = 773,139.90/x
  3. Step 3: Cross multiply
    867,618.30x = 1,300,649.85 × 773,139.90
  4. Step 4: Simplify right side
    867,618.30x = 1,005,584,294,964.02
  5. Step 5: Solve for x
    x = 1,005,584,294,964.02/867,618.30
  6. Step 6: Final answer
    x = 1,159,016.93

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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.