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Finding the Fourth Proportional to 114,988.88, 158,664.92 and 105,687.50

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Solution

The fourth proportional to 114,988.88, 158,664.92 and 105,687.50 is: 145,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,988.88 : 158,664.92 = 105,687.50 : x
  2. Step 2: Convert to fraction form
    114,988.88/158,664.92 = 105,687.50/x
  3. Step 3: Cross multiply
    114,988.88x = 158,664.92 × 105,687.50
  4. Step 4: Simplify right side
    114,988.88x = 16,768,897,410.74
  5. Step 5: Solve for x
    x = 16,768,897,410.74/114,988.88
  6. Step 6: Final answer
    x = 145,830.60

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Why These Related Problems?

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