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Finding the Fourth Proportional to 71,570.69, 98,794.10 and 61,458.51

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Solution

The fourth proportional to 71,570.69, 98,794.10 and 61,458.51 is: 84,835.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570.69 : 98,794.10 = 61,458.51 : x
  2. Step 2: Convert to fraction form
    71,570.69/98,794.10 = 61,458.51/x
  3. Step 3: Cross multiply
    71,570.69x = 98,794.10 × 61,458.51
  4. Step 4: Simplify right side
    71,570.69x = 6,071,737,875.50
  5. Step 5: Solve for x
    x = 6,071,737,875.50/71,570.69
  6. Step 6: Final answer
    x = 84,835.54

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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.