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Finding the Fourth Proportional to 18,602,563.96, 25,672,976.04 and 11,160,504.64

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Solution

The fourth proportional to 18,602,563.96, 25,672,976.04 and 11,160,504.64 is: 15,402,358.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602,563.96 : 25,672,976.04 = 11,160,504.64 : x
  2. Step 2: Convert to fraction form
    18,602,563.96/25,672,976.04 = 11,160,504.64/x
  3. Step 3: Cross multiply
    18,602,563.96x = 25,672,976.04 × 11,160,504.64
  4. Step 4: Simplify right side
    18,602,563.96x = 286,523,368,217,028.81
  5. Step 5: Solve for x
    x = 286,523,368,217,028.81/18,602,563.96
  6. Step 6: Final answer
    x = 15,402,358.99

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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.