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Finding the Fourth Proportional to 117,160.68, 161,656.42 and 69,428.84

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Solution

The fourth proportional to 117,160.68, 161,656.42 and 69,428.84 is: 95,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,160.68 : 161,656.42 = 69,428.84 : x
  2. Step 2: Convert to fraction form
    117,160.68/161,656.42 = 69,428.84/x
  3. Step 3: Cross multiply
    117,160.68x = 161,656.42 × 69,428.84
  4. Step 4: Simplify right side
    117,160.68x = 11,223,617,719.15
  5. Step 5: Solve for x
    x = 11,223,617,719.15/117,160.68
  6. Step 6: Final answer
    x = 95,796.80

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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.