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Finding the Fourth Proportional to 37,686.88, 52,009.32 and 20,923.12

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Solution

The fourth proportional to 37,686.88, 52,009.32 and 20,923.12 is: 28,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,686.88 : 52,009.32 = 20,923.12 : x
  2. Step 2: Convert to fraction form
    37,686.88/52,009.32 = 20,923.12/x
  3. Step 3: Cross multiply
    37,686.88x = 52,009.32 × 20,923.12
  4. Step 4: Simplify right side
    37,686.88x = 1,088,197,243.48
  5. Step 5: Solve for x
    x = 1,088,197,243.48/37,686.88
  6. Step 6: Final answer
    x = 28,874.70

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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.