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Finding the Fourth Proportional to 90,740, 136,137.60 and 46,397.88

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Solution

The fourth proportional to 90,740, 136,137.60 and 46,397.88 is: 69,610.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,740 : 136,137.60 = 46,397.88 : x
  2. Step 2: Convert to fraction form
    90,740/136,137.60 = 46,397.88/x
  3. Step 3: Cross multiply
    90,740x = 136,137.60 × 46,397.88
  4. Step 4: Simplify right side
    90,740x = 6,316,496,028.29
  5. Step 5: Solve for x
    x = 6,316,496,028.29/90,740
  6. Step 6: Final answer
    x = 69,610.93

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.