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Finding the Fourth Proportional to 289,025.01, 398,854.53 and 161,730.54

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Solution

The fourth proportional to 289,025.01, 398,854.53 and 161,730.54 is: 223,188.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,025.01 : 398,854.53 = 161,730.54 : x
  2. Step 2: Convert to fraction form
    289,025.01/398,854.53 = 161,730.54/x
  3. Step 3: Cross multiply
    289,025.01x = 398,854.53 × 161,730.54
  4. Step 4: Simplify right side
    289,025.01x = 64,506,958,518.35
  5. Step 5: Solve for x
    x = 64,506,958,518.35/289,025.01
  6. Step 6: Final answer
    x = 223,188.15

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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.