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Finding the Fourth Proportional to 261,783.60, 392,675.40 and 168,010.80

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Solution

The fourth proportional to 261,783.60, 392,675.40 and 168,010.80 is: 252,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,783.60 : 392,675.40 = 168,010.80 : x
  2. Step 2: Convert to fraction form
    261,783.60/392,675.40 = 168,010.80/x
  3. Step 3: Cross multiply
    261,783.60x = 392,675.40 × 168,010.80
  4. Step 4: Simplify right side
    261,783.60x = 65,973,708,094.32
  5. Step 5: Solve for x
    x = 65,973,708,094.32/261,783.60
  6. Step 6: Final answer
    x = 252,016.20

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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.