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Finding the Fourth Proportional to 64,291.33, 88,720 and 35,611.93

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Solution

The fourth proportional to 64,291.33, 88,720 and 35,611.93 is: 49,143.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,291.33 : 88,720 = 35,611.93 : x
  2. Step 2: Convert to fraction form
    64,291.33/88,720 = 35,611.93/x
  3. Step 3: Cross multiply
    64,291.33x = 88,720 × 35,611.93
  4. Step 4: Simplify right side
    64,291.33x = 3,159,490,429.60
  5. Step 5: Solve for x
    x = 3,159,490,429.60/64,291.33
  6. Step 6: Final answer
    x = 49,143.34

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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.