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Finding the Fourth Proportional to 99,696.05, 137,502.76 and 63,889.39

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Solution

The fourth proportional to 99,696.05, 137,502.76 and 63,889.39 is: 88,117.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696.05 : 137,502.76 = 63,889.39 : x
  2. Step 2: Convert to fraction form
    99,696.05/137,502.76 = 63,889.39/x
  3. Step 3: Cross multiply
    99,696.05x = 137,502.76 × 63,889.39
  4. Step 4: Simplify right side
    99,696.05x = 8,784,967,459.72
  5. Step 5: Solve for x
    x = 8,784,967,459.72/99,696.05
  6. Step 6: Final answer
    x = 88,117.51

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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.