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Finding the Fourth Proportional to 211,220.22, 316,421.94 and 117,441.66

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Solution

The fourth proportional to 211,220.22, 316,421.94 and 117,441.66 is: 175,935.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,220.22 : 316,421.94 = 117,441.66 : x
  2. Step 2: Convert to fraction form
    211,220.22/316,421.94 = 117,441.66/x
  3. Step 3: Cross multiply
    211,220.22x = 316,421.94 × 117,441.66
  4. Step 4: Simplify right side
    211,220.22x = 37,161,117,894.02
  5. Step 5: Solve for x
    x = 37,161,117,894.02/211,220.22
  6. Step 6: Final answer
    x = 175,935.42

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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.