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Finding the Fourth Proportional to 210,805.14, 316,253.88 and 61,051.53

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Solution

The fourth proportional to 210,805.14, 316,253.88 and 61,051.53 is: 91,590.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,805.14 : 316,253.88 = 61,051.53 : x
  2. Step 2: Convert to fraction form
    210,805.14/316,253.88 = 61,051.53/x
  3. Step 3: Cross multiply
    210,805.14x = 316,253.88 × 61,051.53
  4. Step 4: Simplify right side
    210,805.14x = 19,307,783,242.44
  5. Step 5: Solve for x
    x = 19,307,783,242.44/210,805.14
  6. Step 6: Final answer
    x = 91,590.67

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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.