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Finding the Fourth Proportional to 519,689.64, 717,173.88 and 281,225.64

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Solution

The fourth proportional to 519,689.64, 717,173.88 and 281,225.64 is: 388,092.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,689.64 : 717,173.88 = 281,225.64 : x
  2. Step 2: Convert to fraction form
    519,689.64/717,173.88 = 281,225.64/x
  3. Step 3: Cross multiply
    519,689.64x = 717,173.88 × 281,225.64
  4. Step 4: Simplify right side
    519,689.64x = 201,687,683,394.28
  5. Step 5: Solve for x
    x = 201,687,683,394.28/519,689.64
  6. Step 6: Final answer
    x = 388,092.56

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1.5x scale

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.