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Finding the Fourth Proportional to 111,374.52, 153,696.84 and 61,074.60

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Solution

The fourth proportional to 111,374.52, 153,696.84 and 61,074.60 is: 84,282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,374.52 : 153,696.84 = 61,074.60 : x
  2. Step 2: Convert to fraction form
    111,374.52/153,696.84 = 61,074.60/x
  3. Step 3: Cross multiply
    111,374.52x = 153,696.84 × 61,074.60
  4. Step 4: Simplify right side
    111,374.52x = 9,386,973,024.26
  5. Step 5: Solve for x
    x = 9,386,973,024.26/111,374.52
  6. Step 6: Final answer
    x = 84,282.95

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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.