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Finding the Fourth Proportional to 185,663.21, 256,193.96 and 103,980.11

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Solution

The fourth proportional to 185,663.21, 256,193.96 and 103,980.11 is: 143,480.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,663.21 : 256,193.96 = 103,980.11 : x
  2. Step 2: Convert to fraction form
    185,663.21/256,193.96 = 103,980.11/x
  3. Step 3: Cross multiply
    185,663.21x = 256,193.96 × 103,980.11
  4. Step 4: Simplify right side
    185,663.21x = 26,639,074,341.27
  5. Step 5: Solve for x
    x = 26,639,074,341.27/185,663.21
  6. Step 6: Final answer
    x = 143,480.63

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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.