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Finding the Fourth Proportional to 403,508.04, 556,907.67 and 307,834.08

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Solution

The fourth proportional to 403,508.04, 556,907.67 and 307,834.08 is: 424,861.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,508.04 : 556,907.67 = 307,834.08 : x
  2. Step 2: Convert to fraction form
    403,508.04/556,907.67 = 307,834.08/x
  3. Step 3: Cross multiply
    403,508.04x = 556,907.67 × 307,834.08
  4. Step 4: Simplify right side
    403,508.04x = 171,435,160,239.39
  5. Step 5: Solve for x
    x = 171,435,160,239.39/403,508.04
  6. Step 6: Final answer
    x = 424,861.82

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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.