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Finding the Fourth Proportional to 157,421.01, 217,323.99 and 126,458.58

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Solution

The fourth proportional to 157,421.01, 217,323.99 and 126,458.58 is: 174,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,421.01 : 217,323.99 = 126,458.58 : x
  2. Step 2: Convert to fraction form
    157,421.01/217,323.99 = 126,458.58/x
  3. Step 3: Cross multiply
    157,421.01x = 217,323.99 × 126,458.58
  4. Step 4: Simplify right side
    157,421.01x = 27,482,483,175.33
  5. Step 5: Solve for x
    x = 27,482,483,175.33/157,421.01
  6. Step 6: Final answer
    x = 174,579.51

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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.