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Finding the Fourth Proportional to 92,878.54, 128,171.22 and 50,437.36

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Solution

The fourth proportional to 92,878.54, 128,171.22 and 50,437.36 is: 69,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,878.54 : 128,171.22 = 50,437.36 : x
  2. Step 2: Convert to fraction form
    92,878.54/128,171.22 = 50,437.36/x
  3. Step 3: Cross multiply
    92,878.54x = 128,171.22 × 50,437.36
  4. Step 4: Simplify right side
    92,878.54x = 6,464,617,964.78
  5. Step 5: Solve for x
    x = 6,464,617,964.78/92,878.54
  6. Step 6: Final answer
    x = 69,602.92

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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.