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Finding the Fourth Proportional to 611,657.82, 917,486.73 and 190,969.74

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Solution

The fourth proportional to 611,657.82, 917,486.73 and 190,969.74 is: 286,454.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,657.82 : 917,486.73 = 190,969.74 : x
  2. Step 2: Convert to fraction form
    611,657.82/917,486.73 = 190,969.74/x
  3. Step 3: Cross multiply
    611,657.82x = 917,486.73 × 190,969.74
  4. Step 4: Simplify right side
    611,657.82x = 175,212,202,281.55
  5. Step 5: Solve for x
    x = 175,212,202,281.55/611,657.82
  6. Step 6: Final answer
    x = 286,454.61

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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.