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Finding the Fourth Proportional to 90,966.60, 136,478.16 and 46,624.32

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Solution

The fourth proportional to 90,966.60, 136,478.16 and 46,624.32 is: 69,950.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,966.60 : 136,478.16 = 46,624.32 : x
  2. Step 2: Convert to fraction form
    90,966.60/136,478.16 = 46,624.32/x
  3. Step 3: Cross multiply
    90,966.60x = 136,478.16 × 46,624.32
  4. Step 4: Simplify right side
    90,966.60x = 6,363,201,404.85
  5. Step 5: Solve for x
    x = 6,363,201,404.85/90,966.60
  6. Step 6: Final answer
    x = 69,950.96

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Why These Related Problems?

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