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Finding the Fourth Proportional to 65,508.16, 90,401.28 and 35,700.16

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Solution

The fourth proportional to 65,508.16, 90,401.28 and 35,700.16 is: 49,266.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,508.16 : 90,401.28 = 35,700.16 : x
  2. Step 2: Convert to fraction form
    65,508.16/90,401.28 = 35,700.16/x
  3. Step 3: Cross multiply
    65,508.16x = 90,401.28 × 35,700.16
  4. Step 4: Simplify right side
    65,508.16x = 3,227,340,160.20
  5. Step 5: Solve for x
    x = 3,227,340,160.20/65,508.16
  6. Step 6: Final answer
    x = 49,266.23

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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.