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Finding the Fourth Proportional to 355,393.20, 532,895.40 and 144,793.20

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Solution

The fourth proportional to 355,393.20, 532,895.40 and 144,793.20 is: 217,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,393.20 : 532,895.40 = 144,793.20 : x
  2. Step 2: Convert to fraction form
    355,393.20/532,895.40 = 144,793.20/x
  3. Step 3: Cross multiply
    355,393.20x = 532,895.40 × 144,793.20
  4. Step 4: Simplify right side
    355,393.20x = 77,159,630,231.28
  5. Step 5: Solve for x
    x = 77,159,630,231.28/355,393.20
  6. Step 6: Final answer
    x = 217,110.60

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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.