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Finding the Fourth Proportional to 113,421.67, 170,132.49 and 39,549.67

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Solution

The fourth proportional to 113,421.67, 170,132.49 and 39,549.67 is: 59,324.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,421.67 : 170,132.49 = 39,549.67 : x
  2. Step 2: Convert to fraction form
    113,421.67/170,132.49 = 39,549.67/x
  3. Step 3: Cross multiply
    113,421.67x = 170,132.49 × 39,549.67
  4. Step 4: Simplify right side
    113,421.67x = 6,728,683,410.45
  5. Step 5: Solve for x
    x = 6,728,683,410.45/113,421.67
  6. Step 6: Final answer
    x = 59,324.50

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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.