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Finding the Fourth Proportional to 313,495.82, 432,661.16 and 186,171.41

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Solution

The fourth proportional to 313,495.82, 432,661.16 and 186,171.41 is: 256,938.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,495.82 : 432,661.16 = 186,171.41 : x
  2. Step 2: Convert to fraction form
    313,495.82/432,661.16 = 186,171.41/x
  3. Step 3: Cross multiply
    313,495.82x = 432,661.16 × 186,171.41
  4. Step 4: Simplify right side
    313,495.82x = 80,549,139,756.52
  5. Step 5: Solve for x
    x = 80,549,139,756.52/313,495.82
  6. Step 6: Final answer
    x = 256,938.48

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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.