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Finding the Fourth Proportional to 70,860.61, 97,783.14 and 39,029.50

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Solution

The fourth proportional to 70,860.61, 97,783.14 and 39,029.50 is: 53,858.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,860.61 : 97,783.14 = 39,029.50 : x
  2. Step 2: Convert to fraction form
    70,860.61/97,783.14 = 39,029.50/x
  3. Step 3: Cross multiply
    70,860.61x = 97,783.14 × 39,029.50
  4. Step 4: Simplify right side
    70,860.61x = 3,816,427,062.63
  5. Step 5: Solve for x
    x = 3,816,427,062.63/70,860.61
  6. Step 6: Final answer
    x = 53,858.23

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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.