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Finding the Fourth Proportional to 65,934.60, 90,987.54 and 37,255.32

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Solution

The fourth proportional to 65,934.60, 90,987.54 and 37,255.32 is: 51,411.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,934.60 : 90,987.54 = 37,255.32 : x
  2. Step 2: Convert to fraction form
    65,934.60/90,987.54 = 37,255.32/x
  3. Step 3: Cross multiply
    65,934.60x = 90,987.54 × 37,255.32
  4. Step 4: Simplify right side
    65,934.60x = 3,389,769,918.71
  5. Step 5: Solve for x
    x = 3,389,769,918.71/65,934.60
  6. Step 6: Final answer
    x = 51,411.09

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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.