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Finding the Fourth Proportional to 111,557.76, 153,973.44 and 66,871.68

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Solution

The fourth proportional to 111,557.76, 153,973.44 and 66,871.68 is: 92,297.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,557.76 : 153,973.44 = 66,871.68 : x
  2. Step 2: Convert to fraction form
    111,557.76/153,973.44 = 66,871.68/x
  3. Step 3: Cross multiply
    111,557.76x = 153,973.44 × 66,871.68
  4. Step 4: Simplify right side
    111,557.76x = 10,296,462,608.18
  5. Step 5: Solve for x
    x = 10,296,462,608.18/111,557.76
  6. Step 6: Final answer
    x = 92,297.14

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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.