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Finding the Fourth Proportional to 624,865.80, 937,298.70 and 412,289.40

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Solution

The fourth proportional to 624,865.80, 937,298.70 and 412,289.40 is: 618,434.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,865.80 : 937,298.70 = 412,289.40 : x
  2. Step 2: Convert to fraction form
    624,865.80/937,298.70 = 412,289.40/x
  3. Step 3: Cross multiply
    624,865.80x = 937,298.70 × 412,289.40
  4. Step 4: Simplify right side
    624,865.80x = 386,438,318,643.78
  5. Step 5: Solve for x
    x = 386,438,318,643.78/624,865.80
  6. Step 6: Final answer
    x = 618,434.10

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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.