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Finding the Fourth Proportional to 623,138.60, 935,168.70 and 412,706.60

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Solution

The fourth proportional to 623,138.60, 935,168.70 and 412,706.60 is: 619,365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,138.60 : 935,168.70 = 412,706.60 : x
  2. Step 2: Convert to fraction form
    623,138.60/935,168.70 = 412,706.60/x
  3. Step 3: Cross multiply
    623,138.60x = 935,168.70 × 412,706.60
  4. Step 4: Simplify right side
    623,138.60x = 385,950,294,603.42
  5. Step 5: Solve for x
    x = 385,950,294,603.42/623,138.60
  6. Step 6: Final answer
    x = 619,365.09

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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.