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Finding the Fourth Proportional to 619,099.20, 926,899.20 and 556,113.60

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Solution

The fourth proportional to 619,099.20, 926,899.20 and 556,113.60 is: 832,598.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,099.20 : 926,899.20 = 556,113.60 : x
  2. Step 2: Convert to fraction form
    619,099.20/926,899.20 = 556,113.60/x
  3. Step 3: Cross multiply
    619,099.20x = 926,899.20 × 556,113.60
  4. Step 4: Simplify right side
    619,099.20x = 515,461,250,949.12
  5. Step 5: Solve for x
    x = 515,461,250,949.12/619,099.20
  6. Step 6: Final answer
    x = 832,598.80

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Double scale
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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.