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Finding the Fourth Proportional to 89,511.52, 123,509.76 and 50,749.48

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Solution

The fourth proportional to 89,511.52, 123,509.76 and 50,749.48 is: 70,025.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,511.52 : 123,509.76 = 50,749.48 : x
  2. Step 2: Convert to fraction form
    89,511.52/123,509.76 = 50,749.48/x
  3. Step 3: Cross multiply
    89,511.52x = 123,509.76 × 50,749.48
  4. Step 4: Simplify right side
    89,511.52x = 6,268,056,094.92
  5. Step 5: Solve for x
    x = 6,268,056,094.92/89,511.52
  6. Step 6: Final answer
    x = 70,025.13

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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.