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Finding the Fourth Proportional to 70,893.63, 97,833.42 and 39,061.80

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Solution

The fourth proportional to 70,893.63, 97,833.42 and 39,061.80 is: 53,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,893.63 : 97,833.42 = 39,061.80 : x
  2. Step 2: Convert to fraction form
    70,893.63/97,833.42 = 39,061.80/x
  3. Step 3: Cross multiply
    70,893.63x = 97,833.42 × 39,061.80
  4. Step 4: Simplify right side
    70,893.63x = 3,821,549,485.36
  5. Step 5: Solve for x
    x = 3,821,549,485.36/70,893.63
  6. Step 6: Final answer
    x = 53,905.40

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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.