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Finding the Fourth Proportional to 64,397.84, 88,872.03 and 40,213.11

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Solution

The fourth proportional to 64,397.84, 88,872.03 and 40,213.11 is: 55,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,397.84 : 88,872.03 = 40,213.11 : x
  2. Step 2: Convert to fraction form
    64,397.84/88,872.03 = 40,213.11/x
  3. Step 3: Cross multiply
    64,397.84x = 88,872.03 × 40,213.11
  4. Step 4: Simplify right side
    64,397.84x = 3,573,820,718.31
  5. Step 5: Solve for x
    x = 3,573,820,718.31/64,397.84
  6. Step 6: Final answer
    x = 55,495.98

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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.