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Finding the Fourth Proportional to 61,678.40, 85,111.45 and 34,823.56

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Solution

The fourth proportional to 61,678.40, 85,111.45 and 34,823.56 is: 48,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,678.40 : 85,111.45 = 34,823.56 : x
  2. Step 2: Convert to fraction form
    61,678.40/85,111.45 = 34,823.56/x
  3. Step 3: Cross multiply
    61,678.40x = 85,111.45 × 34,823.56
  4. Step 4: Simplify right side
    61,678.40x = 2,963,883,735.91
  5. Step 5: Solve for x
    x = 2,963,883,735.91/61,678.40
  6. Step 6: Final answer
    x = 48,053.83

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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.