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Finding the Fourth Proportional to 99,804.30, 137,718.27 and 59,520.30

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Solution

The fourth proportional to 99,804.30, 137,718.27 and 59,520.30 is: 82,131.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,804.30 : 137,718.27 = 59,520.30 : x
  2. Step 2: Convert to fraction form
    99,804.30/137,718.27 = 59,520.30/x
  3. Step 3: Cross multiply
    99,804.30x = 137,718.27 × 59,520.30
  4. Step 4: Simplify right side
    99,804.30x = 8,197,032,745.88
  5. Step 5: Solve for x
    x = 8,197,032,745.88/99,804.30
  6. Step 6: Final answer
    x = 82,131.06

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1.5x scale

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.