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Finding the Fourth Proportional to 111,090.98, 153,301.74 and 63,359.70

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Solution

The fourth proportional to 111,090.98, 153,301.74 and 63,359.70 is: 87,434.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,090.98 : 153,301.74 = 63,359.70 : x
  2. Step 2: Convert to fraction form
    111,090.98/153,301.74 = 63,359.70/x
  3. Step 3: Cross multiply
    111,090.98x = 153,301.74 × 63,359.70
  4. Step 4: Simplify right side
    111,090.98x = 9,713,152,255.88
  5. Step 5: Solve for x
    x = 9,713,152,255.88/111,090.98
  6. Step 6: Final answer
    x = 87,434.21

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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.