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Finding the Fourth Proportional to 97,858.76, 135,045.78 and 53,146.76

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Solution

The fourth proportional to 97,858.76, 135,045.78 and 53,146.76 is: 73,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,858.76 : 135,045.78 = 53,146.76 : x
  2. Step 2: Convert to fraction form
    97,858.76/135,045.78 = 53,146.76/x
  3. Step 3: Cross multiply
    97,858.76x = 135,045.78 × 53,146.76
  4. Step 4: Simplify right side
    97,858.76x = 7,177,245,658.67
  5. Step 5: Solve for x
    x = 7,177,245,658.67/97,858.76
  6. Step 6: Final answer
    x = 73,342.90

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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.