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Finding the Third Proportional to 607.50 and 916.88

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Solution

The third proportional to 607.50 and 916.88 is: 1,383.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.50 : 916.88 = 916.88 : x
  2. Step 2: Convert to fraction form
    607.50/916.88 = 916.88/x
  3. Step 3: Cross multiply
    607.50x = 916.88 × 916.88
  4. Step 4: Simplify right side
    607.50x = 840,659.77
  5. Step 5: Solve for x
    x = 840,659.77/607.50
  6. Step 6: Final answer
    x = 1,383.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.