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Finding the Fourth Proportional to 153,666, 212,059.08 and 86,600.40

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Solution

The fourth proportional to 153,666, 212,059.08 and 86,600.40 is: 119,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,666 : 212,059.08 = 86,600.40 : x
  2. Step 2: Convert to fraction form
    153,666/212,059.08 = 86,600.40/x
  3. Step 3: Cross multiply
    153,666x = 212,059.08 × 86,600.40
  4. Step 4: Simplify right side
    153,666x = 18,364,401,151.63
  5. Step 5: Solve for x
    x = 18,364,401,151.63/153,666
  6. Step 6: Final answer
    x = 119,508.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.