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Finding the Fourth Proportional to 910,738.90, 1,276,900.70 and 910,738.90

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Solution

The fourth proportional to 910,738.90, 1,276,900.70 and 910,738.90 is: 1,276,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,738.90 : 1,276,900.70 = 910,738.90 : x
  2. Step 2: Convert to fraction form
    910,738.90/1,276,900.70 = 910,738.90/x
  3. Step 3: Cross multiply
    910,738.90x = 1,276,900.70 × 910,738.90
  4. Step 4: Simplify right side
    910,738.90x = 1,162,923,138,927.23
  5. Step 5: Solve for x
    x = 1,162,923,138,927.23/910,738.90
  6. Step 6: Final answer
    x = 1,276,900.70

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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.