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Finding the Fourth Proportional to 111,554.45, 153,945.14 and 61,253.45

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Solution

The fourth proportional to 111,554.45, 153,945.14 and 61,253.45 is: 84,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,554.45 : 153,945.14 = 61,253.45 : x
  2. Step 2: Convert to fraction form
    111,554.45/153,945.14 = 61,253.45/x
  3. Step 3: Cross multiply
    111,554.45x = 153,945.14 × 61,253.45
  4. Step 4: Simplify right side
    111,554.45x = 9,429,669,859.74
  5. Step 5: Solve for x
    x = 9,429,669,859.74/111,554.45
  6. Step 6: Final answer
    x = 84,529.75

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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.