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Finding the Fourth Proportional to 400,865.60, 598,161.52 and 398,532.80

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Solution

The fourth proportional to 400,865.60, 598,161.52 and 398,532.80 is: 594,680.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,865.60 : 598,161.52 = 398,532.80 : x
  2. Step 2: Convert to fraction form
    400,865.60/598,161.52 = 398,532.80/x
  3. Step 3: Cross multiply
    400,865.60x = 598,161.52 × 398,532.80
  4. Step 4: Simplify right side
    400,865.60x = 238,386,985,417.86
  5. Step 5: Solve for x
    x = 238,386,985,417.86/400,865.60
  6. Step 6: Final answer
    x = 594,680.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.