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Finding the Fourth Proportional to 88,216.51, 121,711.96 and 49,969.98

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Solution

The fourth proportional to 88,216.51, 121,711.96 and 49,969.98 is: 68,943.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,216.51 : 121,711.96 = 49,969.98 : x
  2. Step 2: Convert to fraction form
    88,216.51/121,711.96 = 49,969.98/x
  3. Step 3: Cross multiply
    88,216.51x = 121,711.96 × 49,969.98
  4. Step 4: Simplify right side
    88,216.51x = 6,081,944,206.96
  5. Step 5: Solve for x
    x = 6,081,944,206.96/88,216.51
  6. Step 6: Final answer
    x = 68,943.38

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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.