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Finding the Fourth Proportional to 892,938.40, 1,247,314.40 and 892,938.40

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Solution

The fourth proportional to 892,938.40, 1,247,314.40 and 892,938.40 is: 1,247,314.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,938.40 : 1,247,314.40 = 892,938.40 : x
  2. Step 2: Convert to fraction form
    892,938.40/1,247,314.40 = 892,938.40/x
  3. Step 3: Cross multiply
    892,938.40x = 1,247,314.40 × 892,938.40
  4. Step 4: Simplify right side
    892,938.40x = 1,113,774,924,632.96
  5. Step 5: Solve for x
    x = 1,113,774,924,632.96/892,938.40
  6. Step 6: Final answer
    x = 1,247,314.40

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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.