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Finding the Fourth Proportional to 113,564.76, 156,724.65 and 65,833.08

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Solution

The fourth proportional to 113,564.76, 156,724.65 and 65,833.08 is: 90,852.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,564.76 : 156,724.65 = 65,833.08 : x
  2. Step 2: Convert to fraction form
    113,564.76/156,724.65 = 65,833.08/x
  3. Step 3: Cross multiply
    113,564.76x = 156,724.65 × 65,833.08
  4. Step 4: Simplify right side
    113,564.76x = 10,317,666,421.42
  5. Step 5: Solve for x
    x = 10,317,666,421.42/113,564.76
  6. Step 6: Final answer
    x = 90,852.71

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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.