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Finding the Fourth Proportional to 945,561, 1,304,877.34 and 515,850.20

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Solution

The fourth proportional to 945,561, 1,304,877.34 and 515,850.20 is: 711,875.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,561 : 1,304,877.34 = 515,850.20 : x
  2. Step 2: Convert to fraction form
    945,561/1,304,877.34 = 515,850.20/x
  3. Step 3: Cross multiply
    945,561x = 1,304,877.34 × 515,850.20
  4. Step 4: Simplify right side
    945,561x = 673,121,236,814.47
  5. Step 5: Solve for x
    x = 673,121,236,814.47/945,561
  6. Step 6: Final answer
    x = 711,875.00

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.