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Finding the Fourth Proportional to 74,611.38, 102,904.34 and 52,768.92

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Solution

The fourth proportional to 74,611.38, 102,904.34 and 52,768.92 is: 72,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,611.38 : 102,904.34 = 52,768.92 : x
  2. Step 2: Convert to fraction form
    74,611.38/102,904.34 = 52,768.92/x
  3. Step 3: Cross multiply
    74,611.38x = 102,904.34 × 52,768.92
  4. Step 4: Simplify right side
    74,611.38x = 5,430,150,885.11
  5. Step 5: Solve for x
    x = 5,430,150,885.11/74,611.38
  6. Step 6: Final answer
    x = 72,779.12

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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.