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Finding the Fourth Proportional to 185,070.69, 277,720.85 and 85,245.08

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Solution

The fourth proportional to 185,070.69, 277,720.85 and 85,245.08 is: 127,920.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,070.69 : 277,720.85 = 85,245.08 : x
  2. Step 2: Convert to fraction form
    185,070.69/277,720.85 = 85,245.08/x
  3. Step 3: Cross multiply
    185,070.69x = 277,720.85 × 85,245.08
  4. Step 4: Simplify right side
    185,070.69x = 23,674,334,900.43
  5. Step 5: Solve for x
    x = 23,674,334,900.43/185,070.69
  6. Step 6: Final answer
    x = 127,920.50

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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.