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Finding the Fourth Proportional to 402,833.40, 604,230.90 and 136,567.80

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Solution

The fourth proportional to 402,833.40, 604,230.90 and 136,567.80 is: 204,845.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,833.40 : 604,230.90 = 136,567.80 : x
  2. Step 2: Convert to fraction form
    402,833.40/604,230.90 = 136,567.80/x
  3. Step 3: Cross multiply
    402,833.40x = 604,230.90 × 136,567.80
  4. Step 4: Simplify right side
    402,833.40x = 82,518,484,705.02
  5. Step 5: Solve for x
    x = 82,518,484,705.02/402,833.40
  6. Step 6: Final answer
    x = 204,845.19

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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.