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Finding the Fourth Proportional to 605,867.70, 908,801.55 and 403,788.90

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Solution

The fourth proportional to 605,867.70, 908,801.55 and 403,788.90 is: 605,683.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,867.70 : 908,801.55 = 403,788.90 : x
  2. Step 2: Convert to fraction form
    605,867.70/908,801.55 = 403,788.90/x
  3. Step 3: Cross multiply
    605,867.70x = 908,801.55 × 403,788.90
  4. Step 4: Simplify right side
    605,867.70x = 366,963,978,192.80
  5. Step 5: Solve for x
    x = 366,963,978,192.80/605,867.70
  6. Step 6: Final answer
    x = 605,683.35

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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.