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Finding the Fourth Proportional to 416,386.87, 624,486.87 and 191,531.35

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Solution

The fourth proportional to 416,386.87, 624,486.87 and 191,531.35 is: 287,254.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,386.87 : 624,486.87 = 191,531.35 : x
  2. Step 2: Convert to fraction form
    416,386.87/624,486.87 = 191,531.35/x
  3. Step 3: Cross multiply
    416,386.87x = 624,486.87 × 191,531.35
  4. Step 4: Simplify right side
    416,386.87x = 119,608,813,268.38
  5. Step 5: Solve for x
    x = 119,608,813,268.38/416,386.87
  6. Step 6: Final answer
    x = 287,254.05

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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.