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Finding the Fourth Proportional to 61,783.01, 85,269.65 and 39,124.07

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Solution

The fourth proportional to 61,783.01, 85,269.65 and 39,124.07 is: 53,996.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,783.01 : 85,269.65 = 39,124.07 : x
  2. Step 2: Convert to fraction form
    61,783.01/85,269.65 = 39,124.07/x
  3. Step 3: Cross multiply
    61,783.01x = 85,269.65 × 39,124.07
  4. Step 4: Simplify right side
    61,783.01x = 3,336,095,133.51
  5. Step 5: Solve for x
    x = 3,336,095,133.51/61,783.01
  6. Step 6: Final answer
    x = 53,996.97

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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.