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Finding the Fourth Proportional to 665,645.40, 998,468.10 and 461,926.35

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Solution

The fourth proportional to 665,645.40, 998,468.10 and 461,926.35 is: 692,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,645.40 : 998,468.10 = 461,926.35 : x
  2. Step 2: Convert to fraction form
    665,645.40/998,468.10 = 461,926.35/x
  3. Step 3: Cross multiply
    665,645.40x = 998,468.10 × 461,926.35
  4. Step 4: Simplify right side
    665,645.40x = 461,218,725,024.44
  5. Step 5: Solve for x
    x = 461,218,725,024.44/665,645.40
  6. Step 6: Final answer
    x = 692,889.53

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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.