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Finding the Fourth Proportional to 134,980.44, 186,267.94 and 74,549.77

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Solution

The fourth proportional to 134,980.44, 186,267.94 and 74,549.77 is: 102,875.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,980.44 : 186,267.94 = 74,549.77 : x
  2. Step 2: Convert to fraction form
    134,980.44/186,267.94 = 74,549.77/x
  3. Step 3: Cross multiply
    134,980.44x = 186,267.94 × 74,549.77
  4. Step 4: Simplify right side
    134,980.44x = 13,886,232,085.37
  5. Step 5: Solve for x
    x = 13,886,232,085.37/134,980.44
  6. Step 6: Final answer
    x = 102,875.88

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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.