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Finding the Fourth Proportional to 1,008,792.10, 1,413,358.70 and 1,008,792.10

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Solution

The fourth proportional to 1,008,792.10, 1,413,358.70 and 1,008,792.10 is: 1,413,358.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,792.10 : 1,413,358.70 = 1,008,792.10 : x
  2. Step 2: Convert to fraction form
    1,008,792.10/1,413,358.70 = 1,008,792.10/x
  3. Step 3: Cross multiply
    1,008,792.10x = 1,413,358.70 × 1,008,792.10
  4. Step 4: Simplify right side
    1,008,792.10x = 1,425,785,091,026.27
  5. Step 5: Solve for x
    x = 1,425,785,091,026.27/1,008,792.10
  6. Step 6: Final answer
    x = 1,413,358.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.