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Finding the Fourth Proportional to 51,342.03, 70,845.01 and 28,678.14

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Solution

The fourth proportional to 51,342.03, 70,845.01 and 28,678.14 is: 39,571.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,342.03 : 70,845.01 = 28,678.14 : x
  2. Step 2: Convert to fraction form
    51,342.03/70,845.01 = 28,678.14/x
  3. Step 3: Cross multiply
    51,342.03x = 70,845.01 × 28,678.14
  4. Step 4: Simplify right side
    51,342.03x = 2,031,703,043.39
  5. Step 5: Solve for x
    x = 2,031,703,043.39/51,342.03
  6. Step 6: Final answer
    x = 39,571.93

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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.