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Finding the Fourth Proportional to 186,501.86, 279,780.57 and 66,549.45

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Solution

The fourth proportional to 186,501.86, 279,780.57 and 66,549.45 is: 99,834.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,501.86 : 279,780.57 = 66,549.45 : x
  2. Step 2: Convert to fraction form
    186,501.86/279,780.57 = 66,549.45/x
  3. Step 3: Cross multiply
    186,501.86x = 279,780.57 × 66,549.45
  4. Step 4: Simplify right side
    186,501.86x = 18,619,243,054.19
  5. Step 5: Solve for x
    x = 18,619,243,054.19/186,501.86
  6. Step 6: Final answer
    x = 99,834.09

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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.