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Finding the Fourth Proportional to 617,411.91, 926,117.88 and 407,000.64

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Solution

The fourth proportional to 617,411.91, 926,117.88 and 407,000.64 is: 610,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,411.91 : 926,117.88 = 407,000.64 : x
  2. Step 2: Convert to fraction form
    617,411.91/926,117.88 = 407,000.64/x
  3. Step 3: Cross multiply
    617,411.91x = 926,117.88 × 407,000.64
  4. Step 4: Simplify right side
    617,411.91x = 376,930,569,875.44
  5. Step 5: Solve for x
    x = 376,930,569,875.44/617,411.91
  6. Step 6: Final answer
    x = 610,500.97

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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.