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Finding the Fourth Proportional to 64,290.99, 96,459.17 and 28,749

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Solution

The fourth proportional to 64,290.99, 96,459.17 and 28,749 is: 43,133.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,290.99 : 96,459.17 = 28,749 : x
  2. Step 2: Convert to fraction form
    64,290.99/96,459.17 = 28,749/x
  3. Step 3: Cross multiply
    64,290.99x = 96,459.17 × 28,749
  4. Step 4: Simplify right side
    64,290.99x = 2,773,104,678.33
  5. Step 5: Solve for x
    x = 2,773,104,678.33/64,290.99
  6. Step 6: Final answer
    x = 43,133.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.