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Finding the Fourth Proportional to 617,400.72, 926,101.07 and 406,989.45

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Solution

The fourth proportional to 617,400.72, 926,101.07 and 406,989.45 is: 610,484.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,400.72 : 926,101.07 = 406,989.45 : x
  2. Step 2: Convert to fraction form
    617,400.72/926,101.07 = 406,989.45/x
  3. Step 3: Cross multiply
    617,400.72x = 926,101.07 × 406,989.45
  4. Step 4: Simplify right side
    617,400.72x = 376,913,363,431.41
  5. Step 5: Solve for x
    x = 376,913,363,431.41/617,400.72
  6. Step 6: Final answer
    x = 610,484.17

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Double scale
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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.