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Finding the Fourth Proportional to 219,801.53, 329,698.71 and 70,039.80

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Solution

The fourth proportional to 219,801.53, 329,698.71 and 70,039.80 is: 105,058.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,801.53 : 329,698.71 = 70,039.80 : x
  2. Step 2: Convert to fraction form
    219,801.53/329,698.71 = 70,039.80/x
  3. Step 3: Cross multiply
    219,801.53x = 329,698.71 × 70,039.80
  4. Step 4: Simplify right side
    219,801.53x = 23,092,031,708.66
  5. Step 5: Solve for x
    x = 23,092,031,708.66/219,801.53
  6. Step 6: Final answer
    x = 105,058.56

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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.