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Finding the Fourth Proportional to 986,927.70, 1,477,439.10 and 868,829.70

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Solution

The fourth proportional to 986,927.70, 1,477,439.10 and 868,829.70 is: 1,300,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,927.70 : 1,477,439.10 = 868,829.70 : x
  2. Step 2: Convert to fraction form
    986,927.70/1,477,439.10 = 868,829.70/x
  3. Step 3: Cross multiply
    986,927.70x = 1,477,439.10 × 868,829.70
  4. Step 4: Simplify right side
    986,927.70x = 1,283,642,970,021.27
  5. Step 5: Solve for x
    x = 1,283,642,970,021.27/986,927.70
  6. Step 6: Final answer
    x = 1,300,645.40

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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.