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Finding the Fourth Proportional to 99,643.50, 137,437.56 and 59,326.02

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Solution

The fourth proportional to 99,643.50, 137,437.56 and 59,326.02 is: 81,827.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,643.50 : 137,437.56 = 59,326.02 : x
  2. Step 2: Convert to fraction form
    99,643.50/137,437.56 = 59,326.02/x
  3. Step 3: Cross multiply
    99,643.50x = 137,437.56 × 59,326.02
  4. Step 4: Simplify right side
    99,643.50x = 8,153,623,433.31
  5. Step 5: Solve for x
    x = 8,153,623,433.31/99,643.50
  6. Step 6: Final answer
    x = 81,827.95

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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.