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Finding the Fourth Proportional to 65,911.02, 90,957.48 and 35,696.70

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Solution

The fourth proportional to 65,911.02, 90,957.48 and 35,696.70 is: 49,261.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.02 : 90,957.48 = 35,696.70 : x
  2. Step 2: Convert to fraction form
    65,911.02/90,957.48 = 35,696.70/x
  3. Step 3: Cross multiply
    65,911.02x = 90,957.48 × 35,696.70
  4. Step 4: Simplify right side
    65,911.02x = 3,246,881,876.32
  5. Step 5: Solve for x
    x = 3,246,881,876.32/65,911.02
  6. Step 6: Final answer
    x = 49,261.59

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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.