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Finding the Fourth Proportional to 256,334.01, 384,566.67 and 78,842.58

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Solution

The fourth proportional to 256,334.01, 384,566.67 and 78,842.58 is: 118,284.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,334.01 : 384,566.67 = 78,842.58 : x
  2. Step 2: Convert to fraction form
    256,334.01/384,566.67 = 78,842.58/x
  3. Step 3: Cross multiply
    256,334.01x = 384,566.67 × 78,842.58
  4. Step 4: Simplify right side
    256,334.01x = 30,320,228,444.81
  5. Step 5: Solve for x
    x = 30,320,228,444.81/256,334.01
  6. Step 6: Final answer
    x = 118,284.06

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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.