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Finding the Fourth Proportional to 107,807.79, 161,740.86 and 61,093.47

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Solution

The fourth proportional to 107,807.79, 161,740.86 and 61,093.47 is: 91,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,807.79 : 161,740.86 = 61,093.47 : x
  2. Step 2: Convert to fraction form
    107,807.79/161,740.86 = 61,093.47/x
  3. Step 3: Cross multiply
    107,807.79x = 161,740.86 × 61,093.47
  4. Step 4: Simplify right side
    107,807.79x = 9,881,310,378.18
  5. Step 5: Solve for x
    x = 9,881,310,378.18/107,807.79
  6. Step 6: Final answer
    x = 91,656.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.