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Finding the Fourth Proportional to 18,932,313.80, 28,398,470.70 and 15,573,081.80

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Solution

The fourth proportional to 18,932,313.80, 28,398,470.70 and 15,573,081.80 is: 23,359,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932,313.80 : 28,398,470.70 = 15,573,081.80 : x
  2. Step 2: Convert to fraction form
    18,932,313.80/28,398,470.70 = 15,573,081.80/x
  3. Step 3: Cross multiply
    18,932,313.80x = 28,398,470.70 × 15,573,081.80
  4. Step 4: Simplify right side
    18,932,313.80x = 442,251,707,206,003.25
  5. Step 5: Solve for x
    x = 442,251,707,206,003.25/18,932,313.80
  6. Step 6: Final answer
    x = 23,359,622.70

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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.