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Finding the Fourth Proportional to 107,090.88, 147,764.08 and 64,651.72

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Solution

The fourth proportional to 107,090.88, 147,764.08 and 64,651.72 is: 89,206.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,090.88 : 147,764.08 = 64,651.72 : x
  2. Step 2: Convert to fraction form
    107,090.88/147,764.08 = 64,651.72/x
  3. Step 3: Cross multiply
    107,090.88x = 147,764.08 × 64,651.72
  4. Step 4: Simplify right side
    107,090.88x = 9,553,201,926.22
  5. Step 5: Solve for x
    x = 9,553,201,926.22/107,090.88
  6. Step 6: Final answer
    x = 89,206.49

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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.