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Finding the Fourth Proportional to 368,536.80, 508,574.64 and 207,391.80

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Solution

The fourth proportional to 368,536.80, 508,574.64 and 207,391.80 is: 286,197.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,536.80 : 508,574.64 = 207,391.80 : x
  2. Step 2: Convert to fraction form
    368,536.80/508,574.64 = 207,391.80/x
  3. Step 3: Cross multiply
    368,536.80x = 508,574.64 × 207,391.80
  4. Step 4: Simplify right side
    368,536.80x = 105,474,210,023.95
  5. Step 5: Solve for x
    x = 105,474,210,023.95/368,536.80
  6. Step 6: Final answer
    x = 286,197.23

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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.