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Finding the Fourth Proportional to 74,267.66, 110,629.77 and 70,243.58

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Solution

The fourth proportional to 74,267.66, 110,629.77 and 70,243.58 is: 104,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,267.66 : 110,629.77 = 70,243.58 : x
  2. Step 2: Convert to fraction form
    74,267.66/110,629.77 = 70,243.58/x
  3. Step 3: Cross multiply
    74,267.66x = 110,629.77 × 70,243.58
  4. Step 4: Simplify right side
    74,267.66x = 7,771,030,748.16
  5. Step 5: Solve for x
    x = 7,771,030,748.16/74,267.66
  6. Step 6: Final answer
    x = 104,635.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.