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Finding the Fourth Proportional to 65,512.60, 98,268.90 and 28,066.30

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Solution

The fourth proportional to 65,512.60, 98,268.90 and 28,066.30 is: 42,099.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,512.60 : 98,268.90 = 28,066.30 : x
  2. Step 2: Convert to fraction form
    65,512.60/98,268.90 = 28,066.30/x
  3. Step 3: Cross multiply
    65,512.60x = 98,268.90 × 28,066.30
  4. Step 4: Simplify right side
    65,512.60x = 2,758,044,428.07
  5. Step 5: Solve for x
    x = 2,758,044,428.07/65,512.60
  6. Step 6: Final answer
    x = 42,099.45

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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.