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Finding the Fourth Proportional to 624,132.72, 860,905.80 and 409,286.16

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Solution

The fourth proportional to 624,132.72, 860,905.80 and 409,286.16 is: 564,554.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,132.72 : 860,905.80 = 409,286.16 : x
  2. Step 2: Convert to fraction form
    624,132.72/860,905.80 = 409,286.16/x
  3. Step 3: Cross multiply
    624,132.72x = 860,905.80 × 409,286.16
  4. Step 4: Simplify right side
    624,132.72x = 352,356,829,003.73
  5. Step 5: Solve for x
    x = 352,356,829,003.73/624,132.72
  6. Step 6: Final answer
    x = 564,554.33

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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.