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Finding the Fourth Proportional to 186,555.90, 279,751.29 and 53,405.82

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Solution

The fourth proportional to 186,555.90, 279,751.29 and 53,405.82 is: 80,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,555.90 : 279,751.29 = 53,405.82 : x
  2. Step 2: Convert to fraction form
    186,555.90/279,751.29 = 53,405.82/x
  3. Step 3: Cross multiply
    186,555.90x = 279,751.29 × 53,405.82
  4. Step 4: Simplify right side
    186,555.90x = 14,940,347,038.51
  5. Step 5: Solve for x
    x = 14,940,347,038.51/186,555.90
  6. Step 6: Final answer
    x = 80,085.10

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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.