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Finding the Fourth Proportional to 100,955.19, 151,265.38 and 61,392.63

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Solution

The fourth proportional to 100,955.19, 151,265.38 and 61,392.63 is: 91,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,955.19 : 151,265.38 = 61,392.63 : x
  2. Step 2: Convert to fraction form
    100,955.19/151,265.38 = 61,392.63/x
  3. Step 3: Cross multiply
    100,955.19x = 151,265.38 × 61,392.63
  4. Step 4: Simplify right side
    100,955.19x = 9,286,579,506.15
  5. Step 5: Solve for x
    x = 9,286,579,506.15/100,955.19
  6. Step 6: Final answer
    x = 91,987.14

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1.5x scale

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.