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Finding the Fourth Proportional to 647,777.64, 893,470.44 and 561,582.60

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Solution

The fourth proportional to 647,777.64, 893,470.44 and 561,582.60 is: 774,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,777.64 : 893,470.44 = 561,582.60 : x
  2. Step 2: Convert to fraction form
    647,777.64/893,470.44 = 561,582.60/x
  3. Step 3: Cross multiply
    647,777.64x = 893,470.44 × 561,582.60
  4. Step 4: Simplify right side
    647,777.64x = 501,757,452,718.34
  5. Step 5: Solve for x
    x = 501,757,452,718.34/647,777.64
  6. Step 6: Final answer
    x = 774,582.85

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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.