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Finding the Fourth Proportional to 256,064.90, 353,502.28 and 187,076.89

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Solution

The fourth proportional to 256,064.90, 353,502.28 and 187,076.89 is: 258,263.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,064.90 : 353,502.28 = 187,076.89 : x
  2. Step 2: Convert to fraction form
    256,064.90/353,502.28 = 187,076.89/x
  3. Step 3: Cross multiply
    256,064.90x = 353,502.28 × 187,076.89
  4. Step 4: Simplify right side
    256,064.90x = 66,132,106,773.73
  5. Step 5: Solve for x
    x = 66,132,106,773.73/256,064.90
  6. Step 6: Final answer
    x = 258,263.07

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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.