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Finding the Fourth Proportional to 61,312.79, 84,612.21 and 37,114.31

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Solution

The fourth proportional to 61,312.79, 84,612.21 and 37,114.31 is: 51,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,312.79 : 84,612.21 = 37,114.31 : x
  2. Step 2: Convert to fraction form
    61,312.79/84,612.21 = 37,114.31/x
  3. Step 3: Cross multiply
    61,312.79x = 84,612.21 × 37,114.31
  4. Step 4: Simplify right side
    61,312.79x = 3,140,324,072.84
  5. Step 5: Solve for x
    x = 3,140,324,072.84/61,312.79
  6. Step 6: Final answer
    x = 51,218.09

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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.