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Finding the Fourth Proportional to 368,620.80, 552,493.80 and 191,036.40

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Solution

The fourth proportional to 368,620.80, 552,493.80 and 191,036.40 is: 286,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,620.80 : 552,493.80 = 191,036.40 : x
  2. Step 2: Convert to fraction form
    368,620.80/552,493.80 = 191,036.40/x
  3. Step 3: Cross multiply
    368,620.80x = 552,493.80 × 191,036.40
  4. Step 4: Simplify right side
    368,620.80x = 105,546,426,574.32
  5. Step 5: Solve for x
    x = 105,546,426,574.32/368,620.80
  6. Step 6: Final answer
    x = 286,327.92

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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.