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Finding the Fourth Proportional to 624,888.80, 937,333.20 and 412,312.40

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Solution

The fourth proportional to 624,888.80, 937,333.20 and 412,312.40 is: 618,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,888.80 : 937,333.20 = 412,312.40 : x
  2. Step 2: Convert to fraction form
    624,888.80/937,333.20 = 412,312.40/x
  3. Step 3: Cross multiply
    624,888.80x = 937,333.20 × 412,312.40
  4. Step 4: Simplify right side
    624,888.80x = 386,474,101,291.68
  5. Step 5: Solve for x
    x = 386,474,101,291.68/624,888.80
  6. Step 6: Final answer
    x = 618,468.60

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Double scale
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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.