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Finding the Fourth Proportional to 639,862.56, 883,017.36 and 368,065.44

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Solution

The fourth proportional to 639,862.56, 883,017.36 and 368,065.44 is: 507,934.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,862.56 : 883,017.36 = 368,065.44 : x
  2. Step 2: Convert to fraction form
    639,862.56/883,017.36 = 368,065.44/x
  3. Step 3: Cross multiply
    639,862.56x = 883,017.36 × 368,065.44
  4. Step 4: Simplify right side
    639,862.56x = 325,008,173,136.04
  5. Step 5: Solve for x
    x = 325,008,173,136.04/639,862.56
  6. Step 6: Final answer
    x = 507,934.35

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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.