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Finding the Fourth Proportional to 111,032.94, 153,182.43 and 70,739.49

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Solution

The fourth proportional to 111,032.94, 153,182.43 and 70,739.49 is: 97,593.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,032.94 : 153,182.43 = 70,739.49 : x
  2. Step 2: Convert to fraction form
    111,032.94/153,182.43 = 70,739.49/x
  3. Step 3: Cross multiply
    111,032.94x = 153,182.43 × 70,739.49
  4. Step 4: Simplify right side
    111,032.94x = 10,836,046,975.16
  5. Step 5: Solve for x
    x = 10,836,046,975.16/111,032.94
  6. Step 6: Final answer
    x = 97,593.08

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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.