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Finding the Fourth Proportional to 117,572.81, 162,247.79 and 63,856.67

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Solution

The fourth proportional to 117,572.81, 162,247.79 and 63,856.67 is: 88,120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,572.81 : 162,247.79 = 63,856.67 : x
  2. Step 2: Convert to fraction form
    117,572.81/162,247.79 = 63,856.67/x
  3. Step 3: Cross multiply
    117,572.81x = 162,247.79 × 63,856.67
  4. Step 4: Simplify right side
    117,572.81x = 10,360,602,453.74
  5. Step 5: Solve for x
    x = 10,360,602,453.74/117,572.81
  6. Step 6: Final answer
    x = 88,120.74

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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.