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Finding the Fourth Proportional to 186,415.80, 279,602.78 and 51,499.06

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Solution

The fourth proportional to 186,415.80, 279,602.78 and 51,499.06 is: 77,242.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,415.80 : 279,602.78 = 51,499.06 : x
  2. Step 2: Convert to fraction form
    186,415.80/279,602.78 = 51,499.06/x
  3. Step 3: Cross multiply
    186,415.80x = 279,602.78 × 51,499.06
  4. Step 4: Simplify right side
    186,415.80x = 14,399,280,343.39
  5. Step 5: Solve for x
    x = 14,399,280,343.39/186,415.80
  6. Step 6: Final answer
    x = 77,242.81

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1.5x scale

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.