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Finding the Fourth Proportional to 647,167.20, 971,188.20 and 362,857.20

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Solution

The fourth proportional to 647,167.20, 971,188.20 and 362,857.20 is: 544,531.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,167.20 : 971,188.20 = 362,857.20 : x
  2. Step 2: Convert to fraction form
    647,167.20/971,188.20 = 362,857.20/x
  3. Step 3: Cross multiply
    647,167.20x = 971,188.20 × 362,857.20
  4. Step 4: Simplify right side
    647,167.20x = 352,402,630,925.04
  5. Step 5: Solve for x
    x = 352,402,630,925.04/647,167.20
  6. Step 6: Final answer
    x = 544,531.04

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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.