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Finding the Fourth Proportional to 532,642.40, 798,963.60 and 392,674.40

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Solution

The fourth proportional to 532,642.40, 798,963.60 and 392,674.40 is: 589,011.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,642.40 : 798,963.60 = 392,674.40 : x
  2. Step 2: Convert to fraction form
    532,642.40/798,963.60 = 392,674.40/x
  3. Step 3: Cross multiply
    532,642.40x = 798,963.60 × 392,674.40
  4. Step 4: Simplify right side
    532,642.40x = 313,732,552,251.84
  5. Step 5: Solve for x
    x = 313,732,552,251.84/532,642.40
  6. Step 6: Final answer
    x = 589,011.60

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Similar ratio
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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.