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Finding the Fourth Proportional to 592,189.40, 886,971.90 and 487,213.40

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Solution

The fourth proportional to 592,189.40, 886,971.90 and 487,213.40 is: 729,740.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    592,189.40 : 886,971.90 = 487,213.40 : x
  2. Step 2: Convert to fraction form
    592,189.40/886,971.90 = 487,213.40/x
  3. Step 3: Cross multiply
    592,189.40x = 886,971.90 × 487,213.40
  4. Step 4: Simplify right side
    592,189.40x = 432,144,595,103.46
  5. Step 5: Solve for x
    x = 432,144,595,103.46/592,189.40
  6. Step 6: Final answer
    x = 729,740.51

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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.