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Finding the Fourth Proportional to 65,296.90, 90,077.70 and 42,625.41

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Solution

The fourth proportional to 65,296.90, 90,077.70 and 42,625.41 is: 58,802.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,296.90 : 90,077.70 = 42,625.41 : x
  2. Step 2: Convert to fraction form
    65,296.90/90,077.70 = 42,625.41/x
  3. Step 3: Cross multiply
    65,296.90x = 90,077.70 × 42,625.41
  4. Step 4: Simplify right side
    65,296.90x = 3,839,598,894.36
  5. Step 5: Solve for x
    x = 3,839,598,894.36/65,296.90
  6. Step 6: Final answer
    x = 58,802.16

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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.