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Finding the Fourth Proportional to 368,766.90, 553,365.42 and 155,521.66

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Solution

The fourth proportional to 368,766.90, 553,365.42 and 155,521.66 is: 233,373.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,766.90 : 553,365.42 = 155,521.66 : x
  2. Step 2: Convert to fraction form
    368,766.90/553,365.42 = 155,521.66/x
  3. Step 3: Cross multiply
    368,766.90x = 553,365.42 × 155,521.66
  4. Step 4: Simplify right side
    368,766.90x = 86,060,308,705.00
  5. Step 5: Solve for x
    x = 86,060,308,705.00/368,766.90
  6. Step 6: Final answer
    x = 233,373.20

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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.