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Finding the Fourth Proportional to 313,460.88, 432,686.39 and 186,135.59

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Solution

The fourth proportional to 313,460.88, 432,686.39 and 186,135.59 is: 256,932.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,460.88 : 432,686.39 = 186,135.59 : x
  2. Step 2: Convert to fraction form
    313,460.88/432,686.39 = 186,135.59/x
  3. Step 3: Cross multiply
    313,460.88x = 432,686.39 × 186,135.59
  4. Step 4: Simplify right side
    313,460.88x = 80,538,333,393.51
  5. Step 5: Solve for x
    x = 80,538,333,393.51/313,460.88
  6. Step 6: Final answer
    x = 256,932.65

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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.