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Finding the Fourth Proportional to 611,566.90, 917,350.35 and 452,134.60

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Solution

The fourth proportional to 611,566.90, 917,350.35 and 452,134.60 is: 678,201.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,566.90 : 917,350.35 = 452,134.60 : x
  2. Step 2: Convert to fraction form
    611,566.90/917,350.35 = 452,134.60/x
  3. Step 3: Cross multiply
    611,566.90x = 917,350.35 × 452,134.60
  4. Step 4: Simplify right side
    611,566.90x = 414,765,833,557.11
  5. Step 5: Solve for x
    x = 414,765,833,557.11/611,566.90
  6. Step 6: Final answer
    x = 678,201.90

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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.