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Finding the Fourth Proportional to 70,836.79, 97,755.12 and 39,005.68

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Solution

The fourth proportional to 70,836.79, 97,755.12 and 39,005.68 is: 53,828.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,836.79 : 97,755.12 = 39,005.68 : x
  2. Step 2: Convert to fraction form
    70,836.79/97,755.12 = 39,005.68/x
  3. Step 3: Cross multiply
    70,836.79x = 97,755.12 × 39,005.68
  4. Step 4: Simplify right side
    70,836.79x = 3,813,004,929.08
  5. Step 5: Solve for x
    x = 3,813,004,929.08/70,836.79
  6. Step 6: Final answer
    x = 53,828.03

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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.