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Finding the Fourth Proportional to 398,571.12, 597,943.80 and 132,368.40

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Solution

The fourth proportional to 398,571.12, 597,943.80 and 132,368.40 is: 198,581.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,571.12 : 597,943.80 = 132,368.40 : x
  2. Step 2: Convert to fraction form
    398,571.12/597,943.80 = 132,368.40/x
  3. Step 3: Cross multiply
    398,571.12x = 597,943.80 × 132,368.40
  4. Step 4: Simplify right side
    398,571.12x = 79,148,864,095.92
  5. Step 5: Solve for x
    x = 79,148,864,095.92/398,571.12
  6. Step 6: Final answer
    x = 198,581.53

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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.