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Finding the Fourth Proportional to 177,374.60, 266,061.90 and 78,878.60

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Solution

The fourth proportional to 177,374.60, 266,061.90 and 78,878.60 is: 118,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,374.60 : 266,061.90 = 78,878.60 : x
  2. Step 2: Convert to fraction form
    177,374.60/266,061.90 = 78,878.60/x
  3. Step 3: Cross multiply
    177,374.60x = 266,061.90 × 78,878.60
  4. Step 4: Simplify right side
    177,374.60x = 20,986,590,185.34
  5. Step 5: Solve for x
    x = 20,986,590,185.34/177,374.60
  6. Step 6: Final answer
    x = 118,317.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.