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Finding the Fourth Proportional to 403,055.65, 604,588.66 and 118,681.54

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Solution

The fourth proportional to 403,055.65, 604,588.66 and 118,681.54 is: 178,023.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,055.65 : 604,588.66 = 118,681.54 : x
  2. Step 2: Convert to fraction form
    403,055.65/604,588.66 = 118,681.54/x
  3. Step 3: Cross multiply
    403,055.65x = 604,588.66 × 118,681.54
  4. Step 4: Simplify right side
    403,055.65x = 71,753,511,427.16
  5. Step 5: Solve for x
    x = 71,753,511,427.16/403,055.65
  6. Step 6: Final answer
    x = 178,023.83

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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.