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Finding the Fourth Proportional to 85,247.85, 117,598.80 and 65,069.70

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Solution

The fourth proportional to 85,247.85, 117,598.80 and 65,069.70 is: 89,763.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,247.85 : 117,598.80 = 65,069.70 : x
  2. Step 2: Convert to fraction form
    85,247.85/117,598.80 = 65,069.70/x
  3. Step 3: Cross multiply
    85,247.85x = 117,598.80 × 65,069.70
  4. Step 4: Simplify right side
    85,247.85x = 7,652,118,636.36
  5. Step 5: Solve for x
    x = 7,652,118,636.36/85,247.85
  6. Step 6: Final answer
    x = 89,763.19

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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.