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Finding the Fourth Proportional to 100,953.69, 151,263.14 and 61,391.13

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Solution

The fourth proportional to 100,953.69, 151,263.14 and 61,391.13 is: 91,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,953.69 : 151,263.14 = 61,391.13 : x
  2. Step 2: Convert to fraction form
    100,953.69/151,263.14 = 61,391.13/x
  3. Step 3: Cross multiply
    100,953.69x = 151,263.14 × 61,391.13
  4. Step 4: Simplify right side
    100,953.69x = 9,286,214,784.99
  5. Step 5: Solve for x
    x = 9,286,214,784.99/100,953.69
  6. Step 6: Final answer
    x = 91,984.90

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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.