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Finding the Fourth Proportional to 585,862.32, 808,479.30 and 331,213.57

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Solution

The fourth proportional to 585,862.32, 808,479.30 and 331,213.57 is: 457,068.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,862.32 : 808,479.30 = 331,213.57 : x
  2. Step 2: Convert to fraction form
    585,862.32/808,479.30 = 331,213.57/x
  3. Step 3: Cross multiply
    585,862.32x = 808,479.30 × 331,213.57
  4. Step 4: Simplify right side
    585,862.32x = 267,779,315,224.10
  5. Step 5: Solve for x
    x = 267,779,315,224.10/585,862.32
  6. Step 6: Final answer
    x = 457,068.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.