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Finding the Fourth Proportional to 649,605.36, 896,617.84 and 520,037.76

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Solution

The fourth proportional to 649,605.36, 896,617.84 and 520,037.76 is: 717,782.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,605.36 : 896,617.84 = 520,037.76 : x
  2. Step 2: Convert to fraction form
    649,605.36/896,617.84 = 520,037.76/x
  3. Step 3: Cross multiply
    649,605.36x = 896,617.84 × 520,037.76
  4. Step 4: Simplify right side
    649,605.36x = 466,275,133,089.64
  5. Step 5: Solve for x
    x = 466,275,133,089.64/649,605.36
  6. Step 6: Final answer
    x = 717,782.15

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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.