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Finding the Fourth Proportional to 186,630.58, 257,391.75 and 157,700.68

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Solution

The fourth proportional to 186,630.58, 257,391.75 and 157,700.68 is: 217,493.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,630.58 : 257,391.75 = 157,700.68 : x
  2. Step 2: Convert to fraction form
    186,630.58/257,391.75 = 157,700.68/x
  3. Step 3: Cross multiply
    186,630.58x = 257,391.75 × 157,700.68
  4. Step 4: Simplify right side
    186,630.58x = 40,590,854,001.39
  5. Step 5: Solve for x
    x = 40,590,854,001.39/186,630.58
  6. Step 6: Final answer
    x = 217,493.05

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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.