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Finding the Fourth Proportional to 719,304.72, 992,569.80 and 396,994.04

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Solution

The fourth proportional to 719,304.72, 992,569.80 and 396,994.04 is: 547,812.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,304.72 : 992,569.80 = 396,994.04 : x
  2. Step 2: Convert to fraction form
    719,304.72/992,569.80 = 396,994.04/x
  3. Step 3: Cross multiply
    719,304.72x = 992,569.80 × 396,994.04
  4. Step 4: Simplify right side
    719,304.72x = 394,044,294,883.99
  5. Step 5: Solve for x
    x = 394,044,294,883.99/719,304.72
  6. Step 6: Final answer
    x = 547,812.75

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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.