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Finding the Fourth Proportional to 585,970.76, 879,043.90 and 212,081.24

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Solution

The fourth proportional to 585,970.76, 879,043.90 and 212,081.24 is: 318,153.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,970.76 : 879,043.90 = 212,081.24 : x
  2. Step 2: Convert to fraction form
    585,970.76/879,043.90 = 212,081.24/x
  3. Step 3: Cross multiply
    585,970.76x = 879,043.90 × 212,081.24
  4. Step 4: Simplify right side
    585,970.76x = 186,428,720,326.44
  5. Step 5: Solve for x
    x = 186,428,720,326.44/585,970.76
  6. Step 6: Final answer
    x = 318,153.62

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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.