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Finding the Fourth Proportional to 111,409.16, 153,744.89 and 63,662.39

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Solution

The fourth proportional to 111,409.16, 153,744.89 and 63,662.39 is: 87,854.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,409.16 : 153,744.89 = 63,662.39 : x
  2. Step 2: Convert to fraction form
    111,409.16/153,744.89 = 63,662.39/x
  3. Step 3: Cross multiply
    111,409.16x = 153,744.89 × 63,662.39
  4. Step 4: Simplify right side
    111,409.16x = 9,787,767,306.84
  5. Step 5: Solve for x
    x = 9,787,767,306.84/111,409.16
  6. Step 6: Final answer
    x = 87,854.24

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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.