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Finding the Fourth Proportional to 103,616.50, 155,428.80 and 32,587.60

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Solution

The fourth proportional to 103,616.50, 155,428.80 and 32,587.60 is: 48,882.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.50 : 155,428.80 = 32,587.60 : x
  2. Step 2: Convert to fraction form
    103,616.50/155,428.80 = 32,587.60/x
  3. Step 3: Cross multiply
    103,616.50x = 155,428.80 × 32,587.60
  4. Step 4: Simplify right side
    103,616.50x = 5,065,051,562.88
  5. Step 5: Solve for x
    x = 5,065,051,562.88/103,616.50
  6. Step 6: Final answer
    x = 48,882.67

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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.