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Finding the Fourth Proportional to 399,409.47, 599,411.73 and 293,068.22

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Solution

The fourth proportional to 399,409.47, 599,411.73 and 293,068.22 is: 439,820.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,409.47 : 599,411.73 = 293,068.22 : x
  2. Step 2: Convert to fraction form
    399,409.47/599,411.73 = 293,068.22/x
  3. Step 3: Cross multiply
    399,409.47x = 599,411.73 × 293,068.22
  4. Step 4: Simplify right side
    399,409.47x = 175,668,526,860.17
  5. Step 5: Solve for x
    x = 175,668,526,860.17/399,409.47
  6. Step 6: Final answer
    x = 439,820.64

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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.