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Finding the Fourth Proportional to 681,260.90, 940,094.91 and 409,340.25

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Solution

The fourth proportional to 681,260.90, 940,094.91 and 409,340.25 is: 564,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,260.90 : 940,094.91 = 409,340.25 : x
  2. Step 2: Convert to fraction form
    681,260.90/940,094.91 = 409,340.25/x
  3. Step 3: Cross multiply
    681,260.90x = 940,094.91 × 409,340.25
  4. Step 4: Simplify right side
    681,260.90x = 384,818,685,483.13
  5. Step 5: Solve for x
    x = 384,818,685,483.13/681,260.90
  6. Step 6: Final answer
    x = 564,862.43

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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.