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Finding the Fourth Proportional to 219,871.60, 329,418.60 and 186,434.80

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Solution

The fourth proportional to 219,871.60, 329,418.60 and 186,434.80 is: 279,322.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,871.60 : 329,418.60 = 186,434.80 : x
  2. Step 2: Convert to fraction form
    219,871.60/329,418.60 = 186,434.80/x
  3. Step 3: Cross multiply
    219,871.60x = 329,418.60 × 186,434.80
  4. Step 4: Simplify right side
    219,871.60x = 61,415,090,807.28
  5. Step 5: Solve for x
    x = 61,415,090,807.28/219,871.60
  6. Step 6: Final answer
    x = 279,322.53

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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.