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Finding the Fourth Proportional to 628,024.15, 866,654.79 and 356,116.87

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Solution

The fourth proportional to 628,024.15, 866,654.79 and 356,116.87 is: 491,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,024.15 : 866,654.79 = 356,116.87 : x
  2. Step 2: Convert to fraction form
    628,024.15/866,654.79 = 356,116.87/x
  3. Step 3: Cross multiply
    628,024.15x = 866,654.79 × 356,116.87
  4. Step 4: Simplify right side
    628,024.15x = 308,630,391,185.31
  5. Step 5: Solve for x
    x = 308,630,391,185.31/628,024.15
  6. Step 6: Final answer
    x = 491,430.77

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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.