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Finding the Fourth Proportional to 679,234.77, 937,139.09 and 407,203.29

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Solution

The fourth proportional to 679,234.77, 937,139.09 and 407,203.29 is: 561,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,234.77 : 937,139.09 = 407,203.29 : x
  2. Step 2: Convert to fraction form
    679,234.77/937,139.09 = 407,203.29/x
  3. Step 3: Cross multiply
    679,234.77x = 937,139.09 × 407,203.29
  4. Step 4: Simplify right side
    679,234.77x = 381,606,118,599.59
  5. Step 5: Solve for x
    x = 381,606,118,599.59/679,234.77
  6. Step 6: Final answer
    x = 561,817.70

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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.