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Finding the Fourth Proportional to 98,567.79, 136,023.41 and 53,245.76

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Solution

The fourth proportional to 98,567.79, 136,023.41 and 53,245.76 is: 73,479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,567.79 : 136,023.41 = 53,245.76 : x
  2. Step 2: Convert to fraction form
    98,567.79/136,023.41 = 53,245.76/x
  3. Step 3: Cross multiply
    98,567.79x = 136,023.41 × 53,245.76
  4. Step 4: Simplify right side
    98,567.79x = 7,242,668,896.90
  5. Step 5: Solve for x
    x = 7,242,668,896.90/98,567.79
  6. Step 6: Final answer
    x = 73,479.06

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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.