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Finding the Fourth Proportional to 144,613.20, 216,919.80 and 127,117.20

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Solution

The fourth proportional to 144,613.20, 216,919.80 and 127,117.20 is: 190,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,613.20 : 216,919.80 = 127,117.20 : x
  2. Step 2: Convert to fraction form
    144,613.20/216,919.80 = 127,117.20/x
  3. Step 3: Cross multiply
    144,613.20x = 216,919.80 × 127,117.20
  4. Step 4: Simplify right side
    144,613.20x = 27,574,237,600.56
  5. Step 5: Solve for x
    x = 27,574,237,600.56/144,613.20
  6. Step 6: Final answer
    x = 190,675.80

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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.