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Finding the Fourth Proportional to 313,456.13, 432,679.83 and 186,130.82

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Solution

The fourth proportional to 313,456.13, 432,679.83 and 186,130.82 is: 256,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,456.13 : 432,679.83 = 186,130.82 : x
  2. Step 2: Convert to fraction form
    313,456.13/432,679.83 = 186,130.82/x
  3. Step 3: Cross multiply
    313,456.13x = 432,679.83 × 186,130.82
  4. Step 4: Simplify right side
    313,456.13x = 80,535,051,555.36
  5. Step 5: Solve for x
    x = 80,535,051,555.36/313,456.13
  6. Step 6: Final answer
    x = 256,926.07

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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.