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Finding the Fourth Proportional to 248,784.40, 373,322.40 and 91,028.80

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Solution

The fourth proportional to 248,784.40, 373,322.40 and 91,028.80 is: 136,596.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,784.40 : 373,322.40 = 91,028.80 : x
  2. Step 2: Convert to fraction form
    248,784.40/373,322.40 = 91,028.80/x
  3. Step 3: Cross multiply
    248,784.40x = 373,322.40 × 91,028.80
  4. Step 4: Simplify right side
    248,784.40x = 33,983,090,085.12
  5. Step 5: Solve for x
    x = 33,983,090,085.12/248,784.40
  6. Step 6: Final answer
    x = 136,596.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.