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Finding the Fourth Proportional to 445,766.60, 668,751.89 and 193,089.16

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Solution

The fourth proportional to 445,766.60, 668,751.89 and 193,089.16 is: 289,677.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,766.60 : 668,751.89 = 193,089.16 : x
  2. Step 2: Convert to fraction form
    445,766.60/668,751.89 = 193,089.16/x
  3. Step 3: Cross multiply
    445,766.60x = 668,751.89 × 193,089.16
  4. Step 4: Simplify right side
    445,766.60x = 129,128,740,688.51
  5. Step 5: Solve for x
    x = 129,128,740,688.51/445,766.60
  6. Step 6: Final answer
    x = 289,677.92

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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.