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Finding the Fourth Proportional to 777,978.80, 1,072,570.92 and 583,560.08

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Solution

The fourth proportional to 777,978.80, 1,072,570.92 and 583,560.08 is: 804,532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,978.80 : 1,072,570.92 = 583,560.08 : x
  2. Step 2: Convert to fraction form
    777,978.80/1,072,570.92 = 583,560.08/x
  3. Step 3: Cross multiply
    777,978.80x = 1,072,570.92 × 583,560.08
  4. Step 4: Simplify right side
    777,978.80x = 625,909,571,880.87
  5. Step 5: Solve for x
    x = 625,909,571,880.87/777,978.80
  6. Step 6: Final answer
    x = 804,532.94

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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.