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Finding the Fourth Proportional to 57,953.16, 86,985.93 and 27,988.58

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Solution

The fourth proportional to 57,953.16, 86,985.93 and 27,988.58 is: 42,010.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,953.16 : 86,985.93 = 27,988.58 : x
  2. Step 2: Convert to fraction form
    57,953.16/86,985.93 = 27,988.58/x
  3. Step 3: Cross multiply
    57,953.16x = 86,985.93 × 27,988.58
  4. Step 4: Simplify right side
    57,953.16x = 2,434,612,660.68
  5. Step 5: Solve for x
    x = 2,434,612,660.68/57,953.16
  6. Step 6: Final answer
    x = 42,010.01

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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.