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Finding the Fourth Proportional to 314,235.82, 471,354.72 and 77,578.54

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Solution

The fourth proportional to 314,235.82, 471,354.72 and 77,578.54 is: 116,368.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,235.82 : 471,354.72 = 77,578.54 : x
  2. Step 2: Convert to fraction form
    314,235.82/471,354.72 = 77,578.54/x
  3. Step 3: Cross multiply
    314,235.82x = 471,354.72 × 77,578.54
  4. Step 4: Simplify right side
    314,235.82x = 36,567,010,999.71
  5. Step 5: Solve for x
    x = 36,567,010,999.71/314,235.82
  6. Step 6: Final answer
    x = 116,368.05

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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.