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Finding the Fourth Proportional to 619,400.10, 928,881.45 and 220,053.90

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Solution

The fourth proportional to 619,400.10, 928,881.45 and 220,053.90 is: 330,003.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,400.10 : 928,881.45 = 220,053.90 : x
  2. Step 2: Convert to fraction form
    619,400.10/928,881.45 = 220,053.90/x
  3. Step 3: Cross multiply
    619,400.10x = 928,881.45 × 220,053.90
  4. Step 4: Simplify right side
    619,400.10x = 204,403,985,710.16
  5. Step 5: Solve for x
    x = 204,403,985,710.16/619,400.10
  6. Step 6: Final answer
    x = 330,003.15

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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.