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Finding the Fourth Proportional to 368,250.78, 549,687.80 and 315,996.06

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Solution

The fourth proportional to 368,250.78, 549,687.80 and 315,996.06 is: 471,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,250.78 : 549,687.80 = 315,996.06 : x
  2. Step 2: Convert to fraction form
    368,250.78/549,687.80 = 315,996.06/x
  3. Step 3: Cross multiply
    368,250.78x = 549,687.80 × 315,996.06
  4. Step 4: Simplify right side
    368,250.78x = 173,699,179,030.07
  5. Step 5: Solve for x
    x = 173,699,179,030.07/368,250.78
  6. Step 6: Final answer
    x = 471,687.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.