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Finding the Fourth Proportional to 65,197.61, 89,966.65 and 36,903.30

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Solution

The fourth proportional to 65,197.61, 89,966.65 and 36,903.30 is: 50,923.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,197.61 : 89,966.65 = 36,903.30 : x
  2. Step 2: Convert to fraction form
    65,197.61/89,966.65 = 36,903.30/x
  3. Step 3: Cross multiply
    65,197.61x = 89,966.65 × 36,903.30
  4. Step 4: Simplify right side
    65,197.61x = 3,320,065,914.51
  5. Step 5: Solve for x
    x = 3,320,065,914.51/65,197.61
  6. Step 6: Final answer
    x = 50,923.12

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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.