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Finding the Fourth Proportional to 65,699.68, 90,665.53 and 35,484.99

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Solution

The fourth proportional to 65,699.68, 90,665.53 and 35,484.99 is: 48,969.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,699.68 : 90,665.53 = 35,484.99 : x
  2. Step 2: Convert to fraction form
    65,699.68/90,665.53 = 35,484.99/x
  3. Step 3: Cross multiply
    65,699.68x = 90,665.53 × 35,484.99
  4. Step 4: Simplify right side
    65,699.68x = 3,217,265,425.39
  5. Step 5: Solve for x
    x = 3,217,265,425.39/65,699.68
  6. Step 6: Final answer
    x = 48,969.27

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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.