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Finding the Fourth Proportional to 285,185.31, 393,555.74 and 157,860.91

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Solution

The fourth proportional to 285,185.31, 393,555.74 and 157,860.91 is: 217,848.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,185.31 : 393,555.74 = 157,860.91 : x
  2. Step 2: Convert to fraction form
    285,185.31/393,555.74 = 157,860.91/x
  3. Step 3: Cross multiply
    285,185.31x = 393,555.74 × 157,860.91
  4. Step 4: Simplify right side
    285,185.31x = 62,127,066,291.87
  5. Step 5: Solve for x
    x = 62,127,066,291.87/285,185.31
  6. Step 6: Final answer
    x = 217,848.06

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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.