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Finding the Fourth Proportional to 616,359.40, 922,983.90 and 491,943.40

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Solution

The fourth proportional to 616,359.40, 922,983.90 and 491,943.40 is: 736,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,359.40 : 922,983.90 = 491,943.40 : x
  2. Step 2: Convert to fraction form
    616,359.40/922,983.90 = 491,943.40/x
  3. Step 3: Cross multiply
    616,359.40x = 922,983.90 × 491,943.40
  4. Step 4: Simplify right side
    616,359.40x = 454,055,837,911.26
  5. Step 5: Solve for x
    x = 454,055,837,911.26/616,359.40
  6. Step 6: Final answer
    x = 736,673.83

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1.5x scale

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.