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Finding the Fourth Proportional to 519,530.87, 778,607.40 and 266,801.15

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Solution

The fourth proportional to 519,530.87, 778,607.40 and 266,801.15 is: 399,847.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,530.87 : 778,607.40 = 266,801.15 : x
  2. Step 2: Convert to fraction form
    519,530.87/778,607.40 = 266,801.15/x
  3. Step 3: Cross multiply
    519,530.87x = 778,607.40 × 266,801.15
  4. Step 4: Simplify right side
    519,530.87x = 207,733,349,718.51
  5. Step 5: Solve for x
    x = 207,733,349,718.51/519,530.87
  6. Step 6: Final answer
    x = 399,847.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.