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Finding the Fourth Proportional to 624,230.78, 861,346.11 and 379,088.06

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Solution

The fourth proportional to 624,230.78, 861,346.11 and 379,088.06 is: 523,085.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,230.78 : 861,346.11 = 379,088.06 : x
  2. Step 2: Convert to fraction form
    624,230.78/861,346.11 = 379,088.06/x
  3. Step 3: Cross multiply
    624,230.78x = 861,346.11 × 379,088.06
  4. Step 4: Simplify right side
    624,230.78x = 326,526,025,828.45
  5. Step 5: Solve for x
    x = 326,526,025,828.45/624,230.78
  6. Step 6: Final answer
    x = 523,085.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.