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Finding the Fourth Proportional to 88,118.55, 121,603.88 and 47,832.32

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Solution

The fourth proportional to 88,118.55, 121,603.88 and 47,832.32 is: 66,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,118.55 : 121,603.88 = 47,832.32 : x
  2. Step 2: Convert to fraction form
    88,118.55/121,603.88 = 47,832.32/x
  3. Step 3: Cross multiply
    88,118.55x = 121,603.88 × 47,832.32
  4. Step 4: Simplify right side
    88,118.55x = 5,816,596,124.99
  5. Step 5: Solve for x
    x = 5,816,596,124.99/88,118.55
  6. Step 6: Final answer
    x = 66,008.76

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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.