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Finding the Fourth Proportional to 65,011.70, 97,408.20 and 55,607.60

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Solution

The fourth proportional to 65,011.70, 97,408.20 and 55,607.60 is: 83,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,011.70 : 97,408.20 = 55,607.60 : x
  2. Step 2: Convert to fraction form
    65,011.70/97,408.20 = 55,607.60/x
  3. Step 3: Cross multiply
    65,011.70x = 97,408.20 × 55,607.60
  4. Step 4: Simplify right side
    65,011.70x = 5,416,636,222.32
  5. Step 5: Solve for x
    x = 5,416,636,222.32/65,011.70
  6. Step 6: Final answer
    x = 83,317.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.