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Finding the Fourth Proportional to 619,100.20, 926,900.70 and 556,114.60

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Solution

The fourth proportional to 619,100.20, 926,900.70 and 556,114.60 is: 832,600.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,100.20 : 926,900.70 = 556,114.60 : x
  2. Step 2: Convert to fraction form
    619,100.20/926,900.70 = 556,114.60/x
  3. Step 3: Cross multiply
    619,100.20x = 926,900.70 × 556,114.60
  4. Step 4: Simplify right side
    619,100.20x = 515,463,012,020.22
  5. Step 5: Solve for x
    x = 515,463,012,020.22/619,100.20
  6. Step 6: Final answer
    x = 832,600.30

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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.