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Finding the Fourth Proportional to 218,555.11, 301,613.53 and 127,919.51

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Solution

The fourth proportional to 218,555.11, 301,613.53 and 127,919.51 is: 176,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,555.11 : 301,613.53 = 127,919.51 : x
  2. Step 2: Convert to fraction form
    218,555.11/301,613.53 = 127,919.51/x
  3. Step 3: Cross multiply
    218,555.11x = 301,613.53 × 127,919.51
  4. Step 4: Simplify right side
    218,555.11x = 38,582,254,407.27
  5. Step 5: Solve for x
    x = 38,582,254,407.27/218,555.11
  6. Step 6: Final answer
    x = 176,533.30

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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.