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Finding the Fourth Proportional to 619,240.20, 928,860.30 and 554,286.30

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Solution

The fourth proportional to 619,240.20, 928,860.30 and 554,286.30 is: 831,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,240.20 : 928,860.30 = 554,286.30 : x
  2. Step 2: Convert to fraction form
    619,240.20/928,860.30 = 554,286.30/x
  3. Step 3: Cross multiply
    619,240.20x = 928,860.30 × 554,286.30
  4. Step 4: Simplify right side
    619,240.20x = 514,854,538,903.89
  5. Step 5: Solve for x
    x = 514,854,538,903.89/619,240.20
  6. Step 6: Final answer
    x = 831,429.45

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Half scale
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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.