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Finding the Fourth Proportional to 167,783.44, 251,673.80 and 78,988.50

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Solution

The fourth proportional to 167,783.44, 251,673.80 and 78,988.50 is: 118,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,783.44 : 251,673.80 = 78,988.50 : x
  2. Step 2: Convert to fraction form
    167,783.44/251,673.80 = 78,988.50/x
  3. Step 3: Cross multiply
    167,783.44x = 251,673.80 × 78,988.50
  4. Step 4: Simplify right side
    167,783.44x = 19,879,335,951.30
  5. Step 5: Solve for x
    x = 19,879,335,951.30/167,783.44
  6. Step 6: Final answer
    x = 118,482.11

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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.