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Finding the Fourth Proportional to 70,937.84, 97,893.86 and 39,106.64

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Solution

The fourth proportional to 70,937.84, 97,893.86 and 39,106.64 is: 53,966.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,937.84 : 97,893.86 = 39,106.64 : x
  2. Step 2: Convert to fraction form
    70,937.84/97,893.86 = 39,106.64/x
  3. Step 3: Cross multiply
    70,937.84x = 97,893.86 × 39,106.64
  4. Step 4: Simplify right side
    70,937.84x = 3,828,299,941.23
  5. Step 5: Solve for x
    x = 3,828,299,941.23/70,937.84
  6. Step 6: Final answer
    x = 53,966.97

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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.