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Finding the Fourth Proportional to 647,724.32, 893,396.75 and 561,529.19

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Solution

The fourth proportional to 647,724.32, 893,396.75 and 561,529.19 is: 774,509.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,724.32 : 893,396.75 = 561,529.19 : x
  2. Step 2: Convert to fraction form
    647,724.32/893,396.75 = 561,529.19/x
  3. Step 3: Cross multiply
    647,724.32x = 893,396.75 × 561,529.19
  4. Step 4: Simplify right side
    647,724.32x = 501,668,349,355.92
  5. Step 5: Solve for x
    x = 501,668,349,355.92/647,724.32
  6. Step 6: Final answer
    x = 774,509.05

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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.