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Finding the Fourth Proportional to 124,300.60, 186,450.90 and 68,313.40

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Solution

The fourth proportional to 124,300.60, 186,450.90 and 68,313.40 is: 102,470.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,300.60 : 186,450.90 = 68,313.40 : x
  2. Step 2: Convert to fraction form
    124,300.60/186,450.90 = 68,313.40/x
  3. Step 3: Cross multiply
    124,300.60x = 186,450.90 × 68,313.40
  4. Step 4: Simplify right side
    124,300.60x = 12,737,094,912.06
  5. Step 5: Solve for x
    x = 12,737,094,912.06/124,300.60
  6. Step 6: Final answer
    x = 102,470.10

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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.