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Finding the Fourth Proportional to 89,041.92, 122,841.84 and 53,211.48

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Solution

The fourth proportional to 89,041.92, 122,841.84 and 53,211.48 is: 73,410.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,041.92 : 122,841.84 = 53,211.48 : x
  2. Step 2: Convert to fraction form
    89,041.92/122,841.84 = 53,211.48/x
  3. Step 3: Cross multiply
    89,041.92x = 122,841.84 × 53,211.48
  4. Step 4: Simplify right side
    89,041.92x = 6,536,596,112.32
  5. Step 5: Solve for x
    x = 6,536,596,112.32/89,041.92
  6. Step 6: Final answer
    x = 73,410.32

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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.