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Finding the Fourth Proportional to 586,144.90, 879,207.81 and 186,780.28

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Solution

The fourth proportional to 586,144.90, 879,207.81 and 186,780.28 is: 280,167.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,144.90 : 879,207.81 = 186,780.28 : x
  2. Step 2: Convert to fraction form
    586,144.90/879,207.81 = 186,780.28/x
  3. Step 3: Cross multiply
    586,144.90x = 879,207.81 × 186,780.28
  4. Step 4: Simplify right side
    586,144.90x = 164,218,680,929.99
  5. Step 5: Solve for x
    x = 164,218,680,929.99/586,144.90
  6. Step 6: Final answer
    x = 280,167.38

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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.