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Finding the Fourth Proportional to 88,322.40, 132,289.20 and 53,200.80

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Solution

The fourth proportional to 88,322.40, 132,289.20 and 53,200.80 is: 79,684.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,322.40 : 132,289.20 = 53,200.80 : x
  2. Step 2: Convert to fraction form
    88,322.40/132,289.20 = 53,200.80/x
  3. Step 3: Cross multiply
    88,322.40x = 132,289.20 × 53,200.80
  4. Step 4: Simplify right side
    88,322.40x = 7,037,891,271.36
  5. Step 5: Solve for x
    x = 7,037,891,271.36/88,322.40
  6. Step 6: Final answer
    x = 79,684.10

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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.