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Finding the Fourth Proportional to 186,419.64, 279,629.46 and 53,298.84

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Solution

The fourth proportional to 186,419.64, 279,629.46 and 53,298.84 is: 79,948.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,419.64 : 279,629.46 = 53,298.84 : x
  2. Step 2: Convert to fraction form
    186,419.64/279,629.46 = 53,298.84/x
  3. Step 3: Cross multiply
    186,419.64x = 279,629.46 × 53,298.84
  4. Step 4: Simplify right side
    186,419.64x = 14,903,925,847.83
  5. Step 5: Solve for x
    x = 14,903,925,847.83/186,419.64
  6. Step 6: Final answer
    x = 79,948.26

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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.