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Finding the Fourth Proportional to 70,935.92, 97,893.66 and 39,106.88

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Solution

The fourth proportional to 70,935.92, 97,893.66 and 39,106.88 is: 53,968.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,935.92 : 97,893.66 = 39,106.88 : x
  2. Step 2: Convert to fraction form
    70,935.92/97,893.66 = 39,106.88/x
  3. Step 3: Cross multiply
    70,935.92x = 97,893.66 × 39,106.88
  4. Step 4: Simplify right side
    70,935.92x = 3,828,315,614.38
  5. Step 5: Solve for x
    x = 3,828,315,614.38/70,935.92
  6. Step 6: Final answer
    x = 53,968.65

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1.5x scale

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.