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Finding the Fourth Proportional to 45,907.59, 68,861.69 and 12,631.17

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Solution

The fourth proportional to 45,907.59, 68,861.69 and 12,631.17 is: 18,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,907.59 : 68,861.69 = 12,631.17 : x
  2. Step 2: Convert to fraction form
    45,907.59/68,861.69 = 12,631.17/x
  3. Step 3: Cross multiply
    45,907.59x = 68,861.69 × 12,631.17
  4. Step 4: Simplify right side
    45,907.59x = 869,803,697.09
  5. Step 5: Solve for x
    x = 869,803,697.09/45,907.59
  6. Step 6: Final answer
    x = 18,946.84

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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.