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Finding the Fourth Proportional to 668,335.86, 1,002,562.72 and 188,567.90

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Solution

The fourth proportional to 668,335.86, 1,002,562.72 and 188,567.90 is: 282,868.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,335.86 : 1,002,562.72 = 188,567.90 : x
  2. Step 2: Convert to fraction form
    668,335.86/1,002,562.72 = 188,567.90/x
  3. Step 3: Cross multiply
    668,335.86x = 1,002,562.72 × 188,567.90
  4. Step 4: Simplify right side
    668,335.86x = 189,051,145,004.07
  5. Step 5: Solve for x
    x = 189,051,145,004.07/668,335.86
  6. Step 6: Final answer
    x = 282,868.47

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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.