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Finding the Fourth Proportional to 66,480.40, 99,574.80 and 59,093.20

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Solution

The fourth proportional to 66,480.40, 99,574.80 and 59,093.20 is: 88,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,480.40 : 99,574.80 = 59,093.20 : x
  2. Step 2: Convert to fraction form
    66,480.40/99,574.80 = 59,093.20/x
  3. Step 3: Cross multiply
    66,480.40x = 99,574.80 × 59,093.20
  4. Step 4: Simplify right side
    66,480.40x = 5,884,193,571.36
  5. Step 5: Solve for x
    x = 5,884,193,571.36/66,480.40
  6. Step 6: Final answer
    x = 88,510.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.