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Finding the Fourth Proportional to 999,802.56, 1,379,728.46 and 547,093.56

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Solution

The fourth proportional to 999,802.56, 1,379,728.46 and 547,093.56 is: 754,989.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,802.56 : 1,379,728.46 = 547,093.56 : x
  2. Step 2: Convert to fraction form
    999,802.56/1,379,728.46 = 547,093.56/x
  3. Step 3: Cross multiply
    999,802.56x = 1,379,728.46 × 547,093.56
  4. Step 4: Simplify right side
    999,802.56x = 754,840,552,279.25
  5. Step 5: Solve for x
    x = 754,840,552,279.25/999,802.56
  6. Step 6: Final answer
    x = 754,989.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.