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Finding the Fourth Proportional to 610,115.40, 841,987.40 and 338,189.12

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Solution

The fourth proportional to 610,115.40, 841,987.40 and 338,189.12 is: 466,716.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,115.40 : 841,987.40 = 338,189.12 : x
  2. Step 2: Convert to fraction form
    610,115.40/841,987.40 = 338,189.12/x
  3. Step 3: Cross multiply
    610,115.40x = 841,987.40 × 338,189.12
  4. Step 4: Simplify right side
    610,115.40x = 284,750,977,857.09
  5. Step 5: Solve for x
    x = 284,750,977,857.09/610,115.40
  6. Step 6: Final answer
    x = 466,716.59

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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.