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Finding the Fourth Proportional to 917,705.70, 1,376,558.55 and 917,705.70

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Solution

The fourth proportional to 917,705.70, 1,376,558.55 and 917,705.70 is: 1,376,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,705.70 : 1,376,558.55 = 917,705.70 : x
  2. Step 2: Convert to fraction form
    917,705.70/1,376,558.55 = 917,705.70/x
  3. Step 3: Cross multiply
    917,705.70x = 1,376,558.55 × 917,705.70
  4. Step 4: Simplify right side
    917,705.70x = 1,263,275,627,718.73
  5. Step 5: Solve for x
    x = 1,263,275,627,718.73/917,705.70
  6. Step 6: Final answer
    x = 1,376,558.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.