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Finding the Fourth Proportional to 98,829.12, 136,447.02 and 64,897.82

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Solution

The fourth proportional to 98,829.12, 136,447.02 and 64,897.82 is: 89,600.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,829.12 : 136,447.02 = 64,897.82 : x
  2. Step 2: Convert to fraction form
    98,829.12/136,447.02 = 64,897.82/x
  3. Step 3: Cross multiply
    98,829.12x = 136,447.02 × 64,897.82
  4. Step 4: Simplify right side
    98,829.12x = 8,855,113,461.26
  5. Step 5: Solve for x
    x = 8,855,113,461.26/98,829.12
  6. Step 6: Final answer
    x = 89,600.25

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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.