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Finding the Fourth Proportional to 235,869.64, 325,508.10 and 128,441.48

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Solution

The fourth proportional to 235,869.64, 325,508.10 and 128,441.48 is: 177,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,869.64 : 325,508.10 = 128,441.48 : x
  2. Step 2: Convert to fraction form
    235,869.64/325,508.10 = 128,441.48/x
  3. Step 3: Cross multiply
    235,869.64x = 325,508.10 × 128,441.48
  4. Step 4: Simplify right side
    235,869.64x = 41,808,742,115.99
  5. Step 5: Solve for x
    x = 41,808,742,115.99/235,869.64
  6. Step 6: Final answer
    x = 177,253.60

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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.