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Finding the Fourth Proportional to 65,851.99, 90,875.39 and 35,637.30

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Solution

The fourth proportional to 65,851.99, 90,875.39 and 35,637.30 is: 49,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,851.99 : 90,875.39 = 35,637.30 : x
  2. Step 2: Convert to fraction form
    65,851.99/90,875.39 = 35,637.30/x
  3. Step 3: Cross multiply
    65,851.99x = 90,875.39 × 35,637.30
  4. Step 4: Simplify right side
    65,851.99x = 3,238,553,536.05
  5. Step 5: Solve for x
    x = 3,238,553,536.05/65,851.99
  6. Step 6: Final answer
    x = 49,179.28

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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.