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Finding the Fourth Proportional to 98,665.96, 136,156.26 and 53,953

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Solution

The fourth proportional to 98,665.96, 136,156.26 and 53,953 is: 74,453.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,665.96 : 136,156.26 = 53,953 : x
  2. Step 2: Convert to fraction form
    98,665.96/136,156.26 = 53,953/x
  3. Step 3: Cross multiply
    98,665.96x = 136,156.26 × 53,953
  4. Step 4: Simplify right side
    98,665.96x = 7,346,038,695.78
  5. Step 5: Solve for x
    x = 7,346,038,695.78/98,665.96
  6. Step 6: Final answer
    x = 74,453.63

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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.