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Finding the Fourth Proportional to 519,046.22, 778,530.45 and 145,098.38

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Solution

The fourth proportional to 519,046.22, 778,530.45 and 145,098.38 is: 217,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,046.22 : 778,530.45 = 145,098.38 : x
  2. Step 2: Convert to fraction form
    519,046.22/778,530.45 = 145,098.38/x
  3. Step 3: Cross multiply
    519,046.22x = 778,530.45 × 145,098.38
  4. Step 4: Simplify right side
    519,046.22x = 112,963,507,075.67
  5. Step 5: Solve for x
    x = 112,963,507,075.67/519,046.22
  6. Step 6: Final answer
    x = 217,636.70

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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.