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Finding the Fourth Proportional to 97,432.93, 134,468.79 and 81,051.20

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Solution

The fourth proportional to 97,432.93, 134,468.79 and 81,051.20 is: 111,860.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,432.93 : 134,468.79 = 81,051.20 : x
  2. Step 2: Convert to fraction form
    97,432.93/134,468.79 = 81,051.20/x
  3. Step 3: Cross multiply
    97,432.93x = 134,468.79 × 81,051.20
  4. Step 4: Simplify right side
    97,432.93x = 10,898,855,714.45
  5. Step 5: Solve for x
    x = 10,898,855,714.45/97,432.93
  6. Step 6: Final answer
    x = 111,860.08

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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.