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Finding the Fourth Proportional to 51,080.70, 76,621.05 and 23,378.70

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Solution

The fourth proportional to 51,080.70, 76,621.05 and 23,378.70 is: 35,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,080.70 : 76,621.05 = 23,378.70 : x
  2. Step 2: Convert to fraction form
    51,080.70/76,621.05 = 23,378.70/x
  3. Step 3: Cross multiply
    51,080.70x = 76,621.05 × 23,378.70
  4. Step 4: Simplify right side
    51,080.70x = 1,791,300,541.64
  5. Step 5: Solve for x
    x = 1,791,300,541.64/51,080.70
  6. Step 6: Final answer
    x = 35,068.05

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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.