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Finding the Fourth Proportional to 99,357.93, 137,090.52 and 67,152.51

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Solution

The fourth proportional to 99,357.93, 137,090.52 and 67,152.51 is: 92,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,357.93 : 137,090.52 = 67,152.51 : x
  2. Step 2: Convert to fraction form
    99,357.93/137,090.52 = 67,152.51/x
  3. Step 3: Cross multiply
    99,357.93x = 137,090.52 × 67,152.51
  4. Step 4: Simplify right side
    99,357.93x = 9,205,972,515.21
  5. Step 5: Solve for x
    x = 9,205,972,515.21/99,357.93
  6. Step 6: Final answer
    x = 92,654.63

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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.