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Finding the Fourth Proportional to 552,862.20, 830,168.10 and 419,892.60

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Solution

The fourth proportional to 552,862.20, 830,168.10 and 419,892.60 is: 630,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,862.20 : 830,168.10 = 419,892.60 : x
  2. Step 2: Convert to fraction form
    552,862.20/830,168.10 = 419,892.60/x
  3. Step 3: Cross multiply
    552,862.20x = 830,168.10 × 419,892.60
  4. Step 4: Simplify right side
    552,862.20x = 348,581,441,946.06
  5. Step 5: Solve for x
    x = 348,581,441,946.06/552,862.20
  6. Step 6: Final answer
    x = 630,503.30

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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.