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Finding the Fourth Proportional to 256,364.28, 353,256.66 and 230,820.12

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Solution

The fourth proportional to 256,364.28, 353,256.66 and 230,820.12 is: 318,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,364.28 : 353,256.66 = 230,820.12 : x
  2. Step 2: Convert to fraction form
    256,364.28/353,256.66 = 230,820.12/x
  3. Step 3: Cross multiply
    256,364.28x = 353,256.66 × 230,820.12
  4. Step 4: Simplify right side
    256,364.28x = 81,538,744,652.00
  5. Step 5: Solve for x
    x = 81,538,744,652.00/256,364.28
  6. Step 6: Final answer
    x = 318,058.13

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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.