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Finding the Fourth Proportional to 619,098.80, 867,919.30 and 619,098.80

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Solution

The fourth proportional to 619,098.80, 867,919.30 and 619,098.80 is: 867,919.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,098.80 : 867,919.30 = 619,098.80 : x
  2. Step 2: Convert to fraction form
    619,098.80/867,919.30 = 619,098.80/x
  3. Step 3: Cross multiply
    619,098.80x = 867,919.30 × 619,098.80
  4. Step 4: Simplify right side
    619,098.80x = 537,327,797,126.84
  5. Step 5: Solve for x
    x = 537,327,797,126.84/619,098.80
  6. Step 6: Final answer
    x = 867,919.30

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.