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Finding the Fourth Proportional to 514,910.78, 710,599.36 and 285,453.48

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Solution

The fourth proportional to 514,910.78, 710,599.36 and 285,453.48 is: 393,938.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,910.78 : 710,599.36 = 285,453.48 : x
  2. Step 2: Convert to fraction form
    514,910.78/710,599.36 = 285,453.48/x
  3. Step 3: Cross multiply
    514,910.78x = 710,599.36 × 285,453.48
  4. Step 4: Simplify right side
    514,910.78x = 202,843,056,635.05
  5. Step 5: Solve for x
    x = 202,843,056,635.05/514,910.78
  6. Step 6: Final answer
    x = 393,938.26

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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.