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Finding the Fourth Proportional to 644,459.90, 966,870.83 and 189,061.88

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Solution

The fourth proportional to 644,459.90, 966,870.83 and 189,061.88 is: 283,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,459.90 : 966,870.83 = 189,061.88 : x
  2. Step 2: Convert to fraction form
    644,459.90/966,870.83 = 189,061.88/x
  3. Step 3: Cross multiply
    644,459.90x = 966,870.83 × 189,061.88
  4. Step 4: Simplify right side
    644,459.90x = 182,798,412,475.26
  5. Step 5: Solve for x
    x = 182,798,412,475.26/644,459.90
  6. Step 6: Final answer
    x = 283,645.91

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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.