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Finding the Fourth Proportional to 617,717.40, 926,576.10 and 262,642.20

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Solution

The fourth proportional to 617,717.40, 926,576.10 and 262,642.20 is: 393,963.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,717.40 : 926,576.10 = 262,642.20 : x
  2. Step 2: Convert to fraction form
    617,717.40/926,576.10 = 262,642.20/x
  3. Step 3: Cross multiply
    617,717.40x = 926,576.10 × 262,642.20
  4. Step 4: Simplify right side
    617,717.40x = 243,357,985,371.42
  5. Step 5: Solve for x
    x = 243,357,985,371.42/617,717.40
  6. Step 6: Final answer
    x = 393,963.30

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Similar ratio
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1.5x scale

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.