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Finding the Fourth Proportional to 97,698.72, 134,884.71 and 74,994.24

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Solution

The fourth proportional to 97,698.72, 134,884.71 and 74,994.24 is: 103,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,698.72 : 134,884.71 = 74,994.24 : x
  2. Step 2: Convert to fraction form
    97,698.72/134,884.71 = 74,994.24/x
  3. Step 3: Cross multiply
    97,698.72x = 134,884.71 × 74,994.24
  4. Step 4: Simplify right side
    97,698.72x = 10,115,576,314.07
  5. Step 5: Solve for x
    x = 10,115,576,314.07/97,698.72
  6. Step 6: Final answer
    x = 103,538.47

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1.5x scale

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.