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Finding the Fourth Proportional to 65,707.43, 90,676.30 and 35,492.76

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Solution

The fourth proportional to 65,707.43, 90,676.30 and 35,492.76 is: 48,980.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,707.43 : 90,676.30 = 35,492.76 : x
  2. Step 2: Convert to fraction form
    65,707.43/90,676.30 = 35,492.76/x
  3. Step 3: Cross multiply
    65,707.43x = 90,676.30 × 35,492.76
  4. Step 4: Simplify right side
    65,707.43x = 3,218,351,599.13
  5. Step 5: Solve for x
    x = 3,218,351,599.13/65,707.43
  6. Step 6: Final answer
    x = 48,980.02

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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.