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Finding the Fourth Proportional to 867,042.40, 1,211,497.40 and 867,042.40

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Solution

The fourth proportional to 867,042.40, 1,211,497.40 and 867,042.40 is: 1,211,497.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,042.40 : 1,211,497.40 = 867,042.40 : x
  2. Step 2: Convert to fraction form
    867,042.40/1,211,497.40 = 867,042.40/x
  3. Step 3: Cross multiply
    867,042.40x = 1,211,497.40 × 867,042.40
  4. Step 4: Simplify right side
    867,042.40x = 1,050,419,613,289.76
  5. Step 5: Solve for x
    x = 1,050,419,613,289.76/867,042.40
  6. Step 6: Final answer
    x = 1,211,497.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.