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Finding the Fourth Proportional to 64,398.51, 96,597.81 and 51,859.71

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Solution

The fourth proportional to 64,398.51, 96,597.81 and 51,859.71 is: 77,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,398.51 : 96,597.81 = 51,859.71 : x
  2. Step 2: Convert to fraction form
    64,398.51/96,597.81 = 51,859.71/x
  3. Step 3: Cross multiply
    64,398.51x = 96,597.81 × 51,859.71
  4. Step 4: Simplify right side
    64,398.51x = 5,009,534,413.24
  5. Step 5: Solve for x
    x = 5,009,534,413.24/64,398.51
  6. Step 6: Final answer
    x = 77,789.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.