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Finding the Fourth Proportional to 211,208.44, 316,779.54 and 69,052.72

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Solution

The fourth proportional to 211,208.44, 316,779.54 and 69,052.72 is: 103,568.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,208.44 : 316,779.54 = 69,052.72 : x
  2. Step 2: Convert to fraction form
    211,208.44/316,779.54 = 69,052.72/x
  3. Step 3: Cross multiply
    211,208.44x = 316,779.54 × 69,052.72
  4. Step 4: Simplify right side
    211,208.44x = 21,874,488,877.35
  5. Step 5: Solve for x
    x = 21,874,488,877.35/211,208.44
  6. Step 6: Final answer
    x = 103,568.25

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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.