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Finding the Fourth Proportional to 608,927.40, 913,391.10 and 591,431.40

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Solution

The fourth proportional to 608,927.40, 913,391.10 and 591,431.40 is: 887,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,927.40 : 913,391.10 = 591,431.40 : x
  2. Step 2: Convert to fraction form
    608,927.40/913,391.10 = 591,431.40/x
  3. Step 3: Cross multiply
    608,927.40x = 913,391.10 × 591,431.40
  4. Step 4: Simplify right side
    608,927.40x = 540,208,177,020.54
  5. Step 5: Solve for x
    x = 540,208,177,020.54/608,927.40
  6. Step 6: Final answer
    x = 887,147.10

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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.