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Finding the Fourth Proportional to 65,356.16, 90,191.20 and 35,548.16

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Solution

The fourth proportional to 65,356.16, 90,191.20 and 35,548.16 is: 49,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,356.16 : 90,191.20 = 35,548.16 : x
  2. Step 2: Convert to fraction form
    65,356.16/90,191.20 = 35,548.16/x
  3. Step 3: Cross multiply
    65,356.16x = 90,191.20 × 35,548.16
  4. Step 4: Simplify right side
    65,356.16x = 3,206,131,208.19
  5. Step 5: Solve for x
    x = 3,206,131,208.19/65,356.16
  6. Step 6: Final answer
    x = 49,056.30

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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.