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Finding the Fourth Proportional to 986,401.92, 1,475,709.84 and 760,047.48

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Solution

The fourth proportional to 986,401.92, 1,475,709.84 and 760,047.48 is: 1,137,071.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,401.92 : 1,475,709.84 = 760,047.48 : x
  2. Step 2: Convert to fraction form
    986,401.92/1,475,709.84 = 760,047.48/x
  3. Step 3: Cross multiply
    986,401.92x = 1,475,709.84 × 760,047.48
  4. Step 4: Simplify right side
    986,401.92x = 1,121,609,545,103.20
  5. Step 5: Solve for x
    x = 1,121,609,545,103.20/986,401.92
  6. Step 6: Final answer
    x = 1,137,071.53

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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.