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Finding the Fourth Proportional to 63,478.87, 87,401.05 and 48,322.96

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Solution

The fourth proportional to 63,478.87, 87,401.05 and 48,322.96 is: 66,533.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,478.87 : 87,401.05 = 48,322.96 : x
  2. Step 2: Convert to fraction form
    63,478.87/87,401.05 = 48,322.96/x
  3. Step 3: Cross multiply
    63,478.87x = 87,401.05 × 48,322.96
  4. Step 4: Simplify right side
    63,478.87x = 4,223,477,443.11
  5. Step 5: Solve for x
    x = 4,223,477,443.11/63,478.87
  6. Step 6: Final answer
    x = 66,533.60

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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.