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Finding the Fourth Proportional to 913,446.70, 1,280,924.90 and 913,446.70

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Solution

The fourth proportional to 913,446.70, 1,280,924.90 and 913,446.70 is: 1,280,924.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,446.70 : 1,280,924.90 = 913,446.70 : x
  2. Step 2: Convert to fraction form
    913,446.70/1,280,924.90 = 913,446.70/x
  3. Step 3: Cross multiply
    913,446.70x = 1,280,924.90 × 913,446.70
  4. Step 4: Simplify right side
    913,446.70x = 1,170,056,622,852.83
  5. Step 5: Solve for x
    x = 1,170,056,622,852.83/913,446.70
  6. Step 6: Final answer
    x = 1,280,924.90

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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.