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Finding the Fourth Proportional to 60,388.84, 90,521.22 and 20,924.32

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Solution

The fourth proportional to 60,388.84, 90,521.22 and 20,924.32 is: 31,364.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,388.84 : 90,521.22 = 20,924.32 : x
  2. Step 2: Convert to fraction form
    60,388.84/90,521.22 = 20,924.32/x
  3. Step 3: Cross multiply
    60,388.84x = 90,521.22 × 20,924.32
  4. Step 4: Simplify right side
    60,388.84x = 1,894,094,974.07
  5. Step 5: Solve for x
    x = 1,894,094,974.07/60,388.84
  6. Step 6: Final answer
    x = 31,364.98

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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.