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Finding the Fourth Proportional to 279,111.68, 384,978.96 and 183,587.84

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Solution

The fourth proportional to 279,111.68, 384,978.96 and 183,587.84 is: 253,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,111.68 : 384,978.96 = 183,587.84 : x
  2. Step 2: Convert to fraction form
    279,111.68/384,978.96 = 183,587.84/x
  3. Step 3: Cross multiply
    279,111.68x = 384,978.96 × 183,587.84
  4. Step 4: Simplify right side
    279,111.68x = 70,677,455,711.85
  5. Step 5: Solve for x
    x = 70,677,455,711.85/279,111.68
  6. Step 6: Final answer
    x = 253,222.85

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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.