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Finding the Fourth Proportional to 402,792.14, 604,188.18 and 191,790.38

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Solution

The fourth proportional to 402,792.14, 604,188.18 and 191,790.38 is: 287,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,792.14 : 604,188.18 = 191,790.38 : x
  2. Step 2: Convert to fraction form
    402,792.14/604,188.18 = 191,790.38/x
  3. Step 3: Cross multiply
    402,792.14x = 604,188.18 × 191,790.38
  4. Step 4: Simplify right side
    402,792.14x = 115,877,482,144.18
  5. Step 5: Solve for x
    x = 115,877,482,144.18/402,792.14
  6. Step 6: Final answer
    x = 287,685.56

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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.