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Finding the Fourth Proportional to 355,503.20, 533,060.40 and 144,903.20

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Solution

The fourth proportional to 355,503.20, 533,060.40 and 144,903.20 is: 217,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,503.20 : 533,060.40 = 144,903.20 : x
  2. Step 2: Convert to fraction form
    355,503.20/533,060.40 = 144,903.20/x
  3. Step 3: Cross multiply
    355,503.20x = 533,060.40 × 144,903.20
  4. Step 4: Simplify right side
    355,503.20x = 77,242,157,753.28
  5. Step 5: Solve for x
    x = 77,242,157,753.28/355,503.20
  6. Step 6: Final answer
    x = 217,275.56

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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.