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Finding the Fourth Proportional to 256,341.07, 384,566.05 and 87,816.13

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Solution

The fourth proportional to 256,341.07, 384,566.05 and 87,816.13 is: 131,742.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,341.07 : 384,566.05 = 87,816.13 : x
  2. Step 2: Convert to fraction form
    256,341.07/384,566.05 = 87,816.13/x
  3. Step 3: Cross multiply
    256,341.07x = 384,566.05 × 87,816.13
  4. Step 4: Simplify right side
    256,341.07x = 33,771,101,388.74
  5. Step 5: Solve for x
    x = 33,771,101,388.74/256,341.07
  6. Step 6: Final answer
    x = 131,742.84

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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.