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Finding the Fourth Proportional to 358,987.32, 538,555.68 and 106,247.88

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Solution

The fourth proportional to 358,987.32, 538,555.68 and 106,247.88 is: 159,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,987.32 : 538,555.68 = 106,247.88 : x
  2. Step 2: Convert to fraction form
    358,987.32/538,555.68 = 106,247.88/x
  3. Step 3: Cross multiply
    358,987.32x = 538,555.68 × 106,247.88
  4. Step 4: Simplify right side
    358,987.32x = 57,220,399,261.96
  5. Step 5: Solve for x
    x = 57,220,399,261.96/358,987.32
  6. Step 6: Final answer
    x = 159,393.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.