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Finding the Fourth Proportional to 66,603.13, 99,418.84 and 58,195.48

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Solution

The fourth proportional to 66,603.13, 99,418.84 and 58,195.48 is: 86,868.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,603.13 : 99,418.84 = 58,195.48 : x
  2. Step 2: Convert to fraction form
    66,603.13/99,418.84 = 58,195.48/x
  3. Step 3: Cross multiply
    66,603.13x = 99,418.84 × 58,195.48
  4. Step 4: Simplify right side
    66,603.13x = 5,785,726,823.87
  5. Step 5: Solve for x
    x = 5,785,726,823.87/66,603.13
  6. Step 6: Final answer
    x = 86,868.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.