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Finding the Fourth Proportional to 707,329.13, 976,114.33 and 385,041.65

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Solution

The fourth proportional to 707,329.13, 976,114.33 and 385,041.65 is: 531,357.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,329.13 : 976,114.33 = 385,041.65 : x
  2. Step 2: Convert to fraction form
    707,329.13/976,114.33 = 385,041.65/x
  3. Step 3: Cross multiply
    707,329.13x = 976,114.33 × 385,041.65
  4. Step 4: Simplify right side
    707,329.13x = 375,844,672,211.85
  5. Step 5: Solve for x
    x = 375,844,672,211.85/707,329.13
  6. Step 6: Final answer
    x = 531,357.55

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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.