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Finding the Fourth Proportional to 1,318,591.13, 1,819,656.56 and 714,979.13

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Solution

The fourth proportional to 1,318,591.13, 1,819,656.56 and 714,979.13 is: 986,671.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,591.13 : 1,819,656.56 = 714,979.13 : x
  2. Step 2: Convert to fraction form
    1,318,591.13/1,819,656.56 = 714,979.13/x
  3. Step 3: Cross multiply
    1,318,591.13x = 1,819,656.56 × 714,979.13
  4. Step 4: Simplify right side
    1,318,591.13x = 1,301,016,456,856.76
  5. Step 5: Solve for x
    x = 1,301,016,456,856.76/1,318,591.13
  6. Step 6: Final answer
    x = 986,671.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.