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Finding the Fourth Proportional to 51,307.62, 70,803.78 and 28,646.97

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Solution

The fourth proportional to 51,307.62, 70,803.78 and 28,646.97 is: 39,532.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,307.62 : 70,803.78 = 28,646.97 : x
  2. Step 2: Convert to fraction form
    51,307.62/70,803.78 = 28,646.97/x
  3. Step 3: Cross multiply
    51,307.62x = 70,803.78 × 28,646.97
  4. Step 4: Simplify right side
    51,307.62x = 2,028,313,590.03
  5. Step 5: Solve for x
    x = 2,028,313,590.03/51,307.62
  6. Step 6: Final answer
    x = 39,532.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.