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Finding the Fourth Proportional to 313,557.76, 432,697.44 and 186,230.08

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Solution

The fourth proportional to 313,557.76, 432,697.44 and 186,230.08 is: 256,990.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,557.76 : 432,697.44 = 186,230.08 : x
  2. Step 2: Convert to fraction form
    313,557.76/432,697.44 = 186,230.08/x
  3. Step 3: Cross multiply
    313,557.76x = 432,697.44 × 186,230.08
  4. Step 4: Simplify right side
    313,557.76x = 80,581,278,867.00
  5. Step 5: Solve for x
    x = 80,581,278,867.00/313,557.76
  6. Step 6: Final answer
    x = 256,990.22

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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.