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Finding the Fourth Proportional to 211,397.81, 316,764.14 and 163,483.72

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Solution

The fourth proportional to 211,397.81, 316,764.14 and 163,483.72 is: 244,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,397.81 : 316,764.14 = 163,483.72 : x
  2. Step 2: Convert to fraction form
    211,397.81/316,764.14 = 163,483.72/x
  3. Step 3: Cross multiply
    211,397.81x = 316,764.14 × 163,483.72
  4. Step 4: Simplify right side
    211,397.81x = 51,785,779,222.59
  5. Step 5: Solve for x
    x = 51,785,779,222.59/211,397.81
  6. Step 6: Final answer
    x = 244,968.38

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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.