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Finding the Fourth Proportional to 398,515.20, 597,772.80 and 368,102.40

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Solution

The fourth proportional to 398,515.20, 597,772.80 and 368,102.40 is: 552,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,515.20 : 597,772.80 = 368,102.40 : x
  2. Step 2: Convert to fraction form
    398,515.20/597,772.80 = 368,102.40/x
  3. Step 3: Cross multiply
    398,515.20x = 597,772.80 × 368,102.40
  4. Step 4: Simplify right side
    398,515.20x = 220,041,602,334.72
  5. Step 5: Solve for x
    x = 220,041,602,334.72/398,515.20
  6. Step 6: Final answer
    x = 552,153.60

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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.