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Finding the Fourth Proportional to 134,903.84, 186,157.72 and 74,464.80

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Solution

The fourth proportional to 134,903.84, 186,157.72 and 74,464.80 is: 102,756.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,903.84 : 186,157.72 = 74,464.80 : x
  2. Step 2: Convert to fraction form
    134,903.84/186,157.72 = 74,464.80/x
  3. Step 3: Cross multiply
    134,903.84x = 186,157.72 × 74,464.80
  4. Step 4: Simplify right side
    134,903.84x = 13,862,197,388.26
  5. Step 5: Solve for x
    x = 13,862,197,388.26/134,903.84
  6. Step 6: Final answer
    x = 102,756.14

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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.