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Finding the Fourth Proportional to 230,801.27, 318,503.34 and 135,289.51

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Solution

The fourth proportional to 230,801.27, 318,503.34 and 135,289.51 is: 186,698.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,801.27 : 318,503.34 = 135,289.51 : x
  2. Step 2: Convert to fraction form
    230,801.27/318,503.34 = 135,289.51/x
  3. Step 3: Cross multiply
    230,801.27x = 318,503.34 × 135,289.51
  4. Step 4: Simplify right side
    230,801.27x = 43,090,160,005.71
  5. Step 5: Solve for x
    x = 43,090,160,005.71/230,801.27
  6. Step 6: Final answer
    x = 186,698.11

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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.