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Finding the Fourth Proportional to 61,171.80, 91,609.54 and 31,106.94

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Solution

The fourth proportional to 61,171.80, 91,609.54 and 31,106.94 is: 46,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,171.80 : 91,609.54 = 31,106.94 : x
  2. Step 2: Convert to fraction form
    61,171.80/91,609.54 = 31,106.94/x
  3. Step 3: Cross multiply
    61,171.80x = 91,609.54 × 31,106.94
  4. Step 4: Simplify right side
    61,171.80x = 2,849,692,464.21
  5. Step 5: Solve for x
    x = 2,849,692,464.21/61,171.80
  6. Step 6: Final answer
    x = 46,585.07

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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.