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Finding the Fourth Proportional to 139,514.10, 209,271.15 and 127,266.90

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Solution

The fourth proportional to 139,514.10, 209,271.15 and 127,266.90 is: 190,900.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,514.10 : 209,271.15 = 127,266.90 : x
  2. Step 2: Convert to fraction form
    139,514.10/209,271.15 = 127,266.90/x
  3. Step 3: Cross multiply
    139,514.10x = 209,271.15 × 127,266.90
  4. Step 4: Simplify right side
    139,514.10x = 26,633,290,519.94
  5. Step 5: Solve for x
    x = 26,633,290,519.94/139,514.10
  6. Step 6: Final answer
    x = 190,900.35

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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.