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Finding the Fourth Proportional to 88,328.32, 132,489.99 and 28,356.32

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Solution

The fourth proportional to 88,328.32, 132,489.99 and 28,356.32 is: 42,533.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,328.32 : 132,489.99 = 28,356.32 : x
  2. Step 2: Convert to fraction form
    88,328.32/132,489.99 = 28,356.32/x
  3. Step 3: Cross multiply
    88,328.32x = 132,489.99 × 28,356.32
  4. Step 4: Simplify right side
    88,328.32x = 3,756,928,884.46
  5. Step 5: Solve for x
    x = 3,756,928,884.46/88,328.32
  6. Step 6: Final answer
    x = 42,533.69

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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.