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Finding the Fourth Proportional to 61,602.71, 85,020.48 and 37,415.91

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Solution

The fourth proportional to 61,602.71, 85,020.48 and 37,415.91 is: 51,639.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,602.71 : 85,020.48 = 37,415.91 : x
  2. Step 2: Convert to fraction form
    61,602.71/85,020.48 = 37,415.91/x
  3. Step 3: Cross multiply
    61,602.71x = 85,020.48 × 37,415.91
  4. Step 4: Simplify right side
    61,602.71x = 3,181,118,627.84
  5. Step 5: Solve for x
    x = 3,181,118,627.84/61,602.71
  6. Step 6: Final answer
    x = 51,639.27

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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.