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Finding the Fourth Proportional to 355,565.20, 532,570.20 and 276,055.60

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Solution

The fourth proportional to 355,565.20, 532,570.20 and 276,055.60 is: 413,479.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,565.20 : 532,570.20 = 276,055.60 : x
  2. Step 2: Convert to fraction form
    355,565.20/532,570.20 = 276,055.60/x
  3. Step 3: Cross multiply
    355,565.20x = 532,570.20 × 276,055.60
  4. Step 4: Simplify right side
    355,565.20x = 147,018,986,103.12
  5. Step 5: Solve for x
    x = 147,018,986,103.12/355,565.20
  6. Step 6: Final answer
    x = 413,479.68

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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.