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Finding the Fourth Proportional to 1,225,103.72, 1,689,953.69 and 734,942.81

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Solution

The fourth proportional to 1,225,103.72, 1,689,953.69 and 734,942.81 is: 1,013,807.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,103.72 : 1,689,953.69 = 734,942.81 : x
  2. Step 2: Convert to fraction form
    1,225,103.72/1,689,953.69 = 734,942.81/x
  3. Step 3: Cross multiply
    1,225,103.72x = 1,689,953.69 × 734,942.81
  4. Step 4: Simplify right side
    1,225,103.72x = 1,242,019,319,760.71
  5. Step 5: Solve for x
    x = 1,242,019,319,760.71/1,225,103.72
  6. Step 6: Final answer
    x = 1,013,807.49

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.