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Finding the Fourth Proportional to 111,495.29, 153,863.66 and 63,749.66

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Solution

The fourth proportional to 111,495.29, 153,863.66 and 63,749.66 is: 87,974.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,495.29 : 153,863.66 = 63,749.66 : x
  2. Step 2: Convert to fraction form
    111,495.29/153,863.66 = 63,749.66/x
  3. Step 3: Cross multiply
    111,495.29x = 153,863.66 × 63,749.66
  4. Step 4: Simplify right side
    111,495.29x = 9,808,756,011.36
  5. Step 5: Solve for x
    x = 9,808,756,011.36/111,495.29
  6. Step 6: Final answer
    x = 87,974.62

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1.5x scale

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.