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Finding the Fourth Proportional to 278,715.33, 384,786.74 and 183,498.81

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Solution

The fourth proportional to 278,715.33, 384,786.74 and 183,498.81 is: 253,333.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,715.33 : 384,786.74 = 183,498.81 : x
  2. Step 2: Convert to fraction form
    278,715.33/384,786.74 = 183,498.81/x
  3. Step 3: Cross multiply
    278,715.33x = 384,786.74 × 183,498.81
  4. Step 4: Simplify right side
    278,715.33x = 70,607,908,893.78
  5. Step 5: Solve for x
    x = 70,607,908,893.78/278,715.33
  6. Step 6: Final answer
    x = 253,333.42

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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.