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Finding the Fourth Proportional to 65,180.85, 89,903.10 and 59,820.57

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Solution

The fourth proportional to 65,180.85, 89,903.10 and 59,820.57 is: 82,509.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,180.85 : 89,903.10 = 59,820.57 : x
  2. Step 2: Convert to fraction form
    65,180.85/89,903.10 = 59,820.57/x
  3. Step 3: Cross multiply
    65,180.85x = 89,903.10 × 59,820.57
  4. Step 4: Simplify right side
    65,180.85x = 5,378,054,686.77
  5. Step 5: Solve for x
    x = 5,378,054,686.77/65,180.85
  6. Step 6: Final answer
    x = 82,509.74

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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.