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Finding the Fourth Proportional to 113,597.10, 156,764.60 and 65,195.16

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Solution

The fourth proportional to 113,597.10, 156,764.60 and 65,195.16 is: 89,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,597.10 : 156,764.60 = 65,195.16 : x
  2. Step 2: Convert to fraction form
    113,597.10/156,764.60 = 65,195.16/x
  3. Step 3: Cross multiply
    113,597.10x = 156,764.60 × 65,195.16
  4. Step 4: Simplify right side
    113,597.10x = 10,220,293,179.34
  5. Step 5: Solve for x
    x = 10,220,293,179.34/113,597.10
  6. Step 6: Final answer
    x = 89,969.67

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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.