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Finding the Fourth Proportional to 1,367,913.58, 1,886,741.66 and 960,106.40

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Solution

The fourth proportional to 1,367,913.58, 1,886,741.66 and 960,106.40 is: 1,324,259.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367,913.58 : 1,886,741.66 = 960,106.40 : x
  2. Step 2: Convert to fraction form
    1,367,913.58/1,886,741.66 = 960,106.40/x
  3. Step 3: Cross multiply
    1,367,913.58x = 1,886,741.66 × 960,106.40
  4. Step 4: Simplify right side
    1,367,913.58x = 1,811,472,742,912.62
  5. Step 5: Solve for x
    x = 1,811,472,742,912.62/1,367,913.58
  6. Step 6: Final answer
    x = 1,324,259.64

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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.