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Finding the Fourth Proportional to 88,191.56, 121,700.85 and 47,904.50

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Solution

The fourth proportional to 88,191.56, 121,700.85 and 47,904.50 is: 66,106.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,191.56 : 121,700.85 = 47,904.50 : x
  2. Step 2: Convert to fraction form
    88,191.56/121,700.85 = 47,904.50/x
  3. Step 3: Cross multiply
    88,191.56x = 121,700.85 × 47,904.50
  4. Step 4: Simplify right side
    88,191.56x = 5,830,018,368.83
  5. Step 5: Solve for x
    x = 5,830,018,368.83/88,191.56
  6. Step 6: Final answer
    x = 66,106.31

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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.