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Finding the Fourth Proportional to 586,918.40, 879,211.20 and 337,308.80

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Solution

The fourth proportional to 586,918.40, 879,211.20 and 337,308.80 is: 505,292.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,918.40 : 879,211.20 = 337,308.80 : x
  2. Step 2: Convert to fraction form
    586,918.40/879,211.20 = 337,308.80/x
  3. Step 3: Cross multiply
    586,918.40x = 879,211.20 × 337,308.80
  4. Step 4: Simplify right side
    586,918.40x = 296,565,674,818.56
  5. Step 5: Solve for x
    x = 296,565,674,818.56/586,918.40
  6. Step 6: Final answer
    x = 505,292.86

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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.