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Finding the Fourth Proportional to 409,878.90, 614,672.55 and 185,346.90

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Solution

The fourth proportional to 409,878.90, 614,672.55 and 185,346.90 is: 277,954.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,878.90 : 614,672.55 = 185,346.90 : x
  2. Step 2: Convert to fraction form
    409,878.90/614,672.55 = 185,346.90/x
  3. Step 3: Cross multiply
    409,878.90x = 614,672.55 × 185,346.90
  4. Step 4: Simplify right side
    409,878.90x = 113,927,651,657.60
  5. Step 5: Solve for x
    x = 113,927,651,657.60/409,878.90
  6. Step 6: Final answer
    x = 277,954.42

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1.5x scale

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.