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Finding the Fourth Proportional to 612,998.70, 919,498.05 and 276,200.70

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Solution

The fourth proportional to 612,998.70, 919,498.05 and 276,200.70 is: 414,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,998.70 : 919,498.05 = 276,200.70 : x
  2. Step 2: Convert to fraction form
    612,998.70/919,498.05 = 276,200.70/x
  3. Step 3: Cross multiply
    612,998.70x = 919,498.05 × 276,200.70
  4. Step 4: Simplify right side
    612,998.70x = 253,966,005,058.64
  5. Step 5: Solve for x
    x = 253,966,005,058.64/612,998.70
  6. Step 6: Final answer
    x = 414,301.05

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.