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Finding the Fourth Proportional to 652,111.40, 978,167.10 and 494,647.40

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Solution

The fourth proportional to 652,111.40, 978,167.10 and 494,647.40 is: 741,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,111.40 : 978,167.10 = 494,647.40 : x
  2. Step 2: Convert to fraction form
    652,111.40/978,167.10 = 494,647.40/x
  3. Step 3: Cross multiply
    652,111.40x = 978,167.10 × 494,647.40
  4. Step 4: Simplify right side
    652,111.40x = 483,847,812,780.54
  5. Step 5: Solve for x
    x = 483,847,812,780.54/652,111.40
  6. Step 6: Final answer
    x = 741,971.10

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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.