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Finding the Fourth Proportional to 867,337.80, 1,215,931.80 and 867,337.80

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Solution

The fourth proportional to 867,337.80, 1,215,931.80 and 867,337.80 is: 1,215,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,337.80 : 1,215,931.80 = 867,337.80 : x
  2. Step 2: Convert to fraction form
    867,337.80/1,215,931.80 = 867,337.80/x
  3. Step 3: Cross multiply
    867,337.80x = 1,215,931.80 × 867,337.80
  4. Step 4: Simplify right side
    867,337.80x = 1,054,623,612,362.04
  5. Step 5: Solve for x
    x = 1,054,623,612,362.04/867,337.80
  6. Step 6: Final answer
    x = 1,215,931.80

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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.