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Finding the Fourth Proportional to 98,627.88, 136,103.94 and 53,913

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Solution

The fourth proportional to 98,627.88, 136,103.94 and 53,913 is: 74,398.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,627.88 : 136,103.94 = 53,913 : x
  2. Step 2: Convert to fraction form
    98,627.88/136,103.94 = 53,913/x
  3. Step 3: Cross multiply
    98,627.88x = 136,103.94 × 53,913
  4. Step 4: Simplify right side
    98,627.88x = 7,337,771,717.22
  5. Step 5: Solve for x
    x = 7,337,771,717.22/98,627.88
  6. Step 6: Final answer
    x = 74,398.55

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1.5x scale

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.