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Finding the Fourth Proportional to 417,200.80, 624,817.05 and 283,356.40

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Solution

The fourth proportional to 417,200.80, 624,817.05 and 283,356.40 is: 424,366.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,200.80 : 624,817.05 = 283,356.40 : x
  2. Step 2: Convert to fraction form
    417,200.80/624,817.05 = 283,356.40/x
  3. Step 3: Cross multiply
    417,200.80x = 624,817.05 × 283,356.40
  4. Step 4: Simplify right side
    417,200.80x = 177,045,909,946.62
  5. Step 5: Solve for x
    x = 177,045,909,946.62/417,200.80
  6. Step 6: Final answer
    x = 424,366.18

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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.