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Finding the Fourth Proportional to 105,752.40, 158,628.60 and 61,356.30

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Solution

The fourth proportional to 105,752.40, 158,628.60 and 61,356.30 is: 92,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,752.40 : 158,628.60 = 61,356.30 : x
  2. Step 2: Convert to fraction form
    105,752.40/158,628.60 = 61,356.30/x
  3. Step 3: Cross multiply
    105,752.40x = 158,628.60 × 61,356.30
  4. Step 4: Simplify right side
    105,752.40x = 9,732,863,970.18
  5. Step 5: Solve for x
    x = 9,732,863,970.18/105,752.40
  6. Step 6: Final answer
    x = 92,034.45

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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.