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Finding the Fourth Proportional to 723,780.97, 998,862.44 and 417,913.22

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Solution

The fourth proportional to 723,780.97, 998,862.44 and 417,913.22 is: 576,746.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,780.97 : 998,862.44 = 417,913.22 : x
  2. Step 2: Convert to fraction form
    723,780.97/998,862.44 = 417,913.22/x
  3. Step 3: Cross multiply
    723,780.97x = 998,862.44 × 417,913.22
  4. Step 4: Simplify right side
    723,780.97x = 417,437,819,045.05
  5. Step 5: Solve for x
    x = 417,437,819,045.05/723,780.97
  6. Step 6: Final answer
    x = 576,746.06

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1.5x scale

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.