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Finding the Fourth Proportional to 235,516.20, 324,898.20 and 139,955.28

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Solution

The fourth proportional to 235,516.20, 324,898.20 and 139,955.28 is: 193,070.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,516.20 : 324,898.20 = 139,955.28 : x
  2. Step 2: Convert to fraction form
    235,516.20/324,898.20 = 139,955.28/x
  3. Step 3: Cross multiply
    235,516.20x = 324,898.20 × 139,955.28
  4. Step 4: Simplify right side
    235,516.20x = 45,471,218,552.50
  5. Step 5: Solve for x
    x = 45,471,218,552.50/235,516.20
  6. Step 6: Final answer
    x = 193,070.45

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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.