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Finding the Fourth Proportional to 111,151.03, 153,346.54 and 72,931.67

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Solution

The fourth proportional to 111,151.03, 153,346.54 and 72,931.67 is: 100,618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,151.03 : 153,346.54 = 72,931.67 : x
  2. Step 2: Convert to fraction form
    111,151.03/153,346.54 = 72,931.67/x
  3. Step 3: Cross multiply
    111,151.03x = 153,346.54 × 72,931.67
  4. Step 4: Simplify right side
    111,151.03x = 11,183,819,250.92
  5. Step 5: Solve for x
    x = 11,183,819,250.92/111,151.03
  6. Step 6: Final answer
    x = 100,618.22

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.