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Finding the Fourth Proportional to 70,902.38, 97,845.60 and 39,070.59

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Solution

The fourth proportional to 70,902.38, 97,845.60 and 39,070.59 is: 53,917.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,902.38 : 97,845.60 = 39,070.59 : x
  2. Step 2: Convert to fraction form
    70,902.38/97,845.60 = 39,070.59/x
  3. Step 3: Cross multiply
    70,902.38x = 97,845.60 × 39,070.59
  4. Step 4: Simplify right side
    70,902.38x = 3,822,885,320.90
  5. Step 5: Solve for x
    x = 3,822,885,320.90/70,902.38
  6. Step 6: Final answer
    x = 53,917.59

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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.