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Finding the Fourth Proportional to 218,888.69, 302,053.37 and 127,000.86

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Solution

The fourth proportional to 218,888.69, 302,053.37 and 127,000.86 is: 175,253.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,888.69 : 302,053.37 = 127,000.86 : x
  2. Step 2: Convert to fraction form
    218,888.69/302,053.37 = 127,000.86/x
  3. Step 3: Cross multiply
    218,888.69x = 302,053.37 × 127,000.86
  4. Step 4: Simplify right side
    218,888.69x = 38,361,036,940.70
  5. Step 5: Solve for x
    x = 38,361,036,940.70/218,888.69
  6. Step 6: Final answer
    x = 175,253.63

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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.