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Finding the Fourth Proportional to 210,955.22, 316,392.51 and 63,211.22

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Solution

The fourth proportional to 210,955.22, 316,392.51 and 63,211.22 is: 94,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,955.22 : 316,392.51 = 63,211.22 : x
  2. Step 2: Convert to fraction form
    210,955.22/316,392.51 = 63,211.22/x
  3. Step 3: Cross multiply
    210,955.22x = 316,392.51 × 63,211.22
  4. Step 4: Simplify right side
    210,955.22x = 19,999,556,555.96
  5. Step 5: Solve for x
    x = 19,999,556,555.96/210,955.22
  6. Step 6: Final answer
    x = 94,804.75

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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.