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Finding the Fourth Proportional to 111,354.88, 153,668.64 and 61,053.76

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Solution

The fourth proportional to 111,354.88, 153,668.64 and 61,053.76 is: 84,253.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,354.88 : 153,668.64 = 61,053.76 : x
  2. Step 2: Convert to fraction form
    111,354.88/153,668.64 = 61,053.76/x
  3. Step 3: Cross multiply
    111,354.88x = 153,668.64 × 61,053.76
  4. Step 4: Simplify right side
    111,354.88x = 9,382,048,266.09
  5. Step 5: Solve for x
    x = 9,382,048,266.09/111,354.88
  6. Step 6: Final answer
    x = 84,253.59

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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.