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Finding the Fourth Proportional to 624,139.20, 936,208.80 and 551,822.40

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Solution

The fourth proportional to 624,139.20, 936,208.80 and 551,822.40 is: 827,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,139.20 : 936,208.80 = 551,822.40 : x
  2. Step 2: Convert to fraction form
    624,139.20/936,208.80 = 551,822.40/x
  3. Step 3: Cross multiply
    624,139.20x = 936,208.80 × 551,822.40
  4. Step 4: Simplify right side
    624,139.20x = 516,620,986,917.12
  5. Step 5: Solve for x
    x = 516,620,986,917.12/624,139.20
  6. Step 6: Final answer
    x = 827,733.60

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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.