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Finding the Fourth Proportional to 313,611.40, 432,820.83 and 186,287.50

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Solution

The fourth proportional to 313,611.40, 432,820.83 and 186,287.50 is: 257,098.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,611.40 : 432,820.83 = 186,287.50 : x
  2. Step 2: Convert to fraction form
    313,611.40/432,820.83 = 186,287.50/x
  3. Step 3: Cross multiply
    313,611.40x = 432,820.83 × 186,287.50
  4. Step 4: Simplify right side
    313,611.40x = 80,629,110,368.63
  5. Step 5: Solve for x
    x = 80,629,110,368.63/313,611.40
  6. Step 6: Final answer
    x = 257,098.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.