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Finding the Fourth Proportional to 32,991.60, 49,390.20 and 31,069.20

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Solution

The fourth proportional to 32,991.60, 49,390.20 and 31,069.20 is: 46,512.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,991.60 : 49,390.20 = 31,069.20 : x
  2. Step 2: Convert to fraction form
    32,991.60/49,390.20 = 31,069.20/x
  3. Step 3: Cross multiply
    32,991.60x = 49,390.20 × 31,069.20
  4. Step 4: Simplify right side
    32,991.60x = 1,534,514,001.84
  5. Step 5: Solve for x
    x = 1,534,514,001.84/32,991.60
  6. Step 6: Final answer
    x = 46,512.26

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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.