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Finding the Fourth Proportional to 418,630.60, 623,513.03 and 416,591.20

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Solution

The fourth proportional to 418,630.60, 623,513.03 and 416,591.20 is: 620,475.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,630.60 : 623,513.03 = 416,591.20 : x
  2. Step 2: Convert to fraction form
    418,630.60/623,513.03 = 416,591.20/x
  3. Step 3: Cross multiply
    418,630.60x = 623,513.03 × 416,591.20
  4. Step 4: Simplify right side
    418,630.60x = 259,750,041,383.34
  5. Step 5: Solve for x
    x = 259,750,041,383.34/418,630.60
  6. Step 6: Final answer
    x = 620,475.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.