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Finding the Fourth Proportional to 111,320.81, 153,630.54 and 62,923.09

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Solution

The fourth proportional to 111,320.81, 153,630.54 and 62,923.09 is: 86,838.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,320.81 : 153,630.54 = 62,923.09 : x
  2. Step 2: Convert to fraction form
    111,320.81/153,630.54 = 62,923.09/x
  3. Step 3: Cross multiply
    111,320.81x = 153,630.54 × 62,923.09
  4. Step 4: Simplify right side
    111,320.81x = 9,666,909,034.02
  5. Step 5: Solve for x
    x = 9,666,909,034.02/111,320.81
  6. Step 6: Final answer
    x = 86,838.30

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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.