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Finding the Fourth Proportional to 917,071.10, 1,375,606.65 and 917,071.10

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Solution

The fourth proportional to 917,071.10, 1,375,606.65 and 917,071.10 is: 1,375,606.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,071.10 : 1,375,606.65 = 917,071.10 : x
  2. Step 2: Convert to fraction form
    917,071.10/1,375,606.65 = 917,071.10/x
  3. Step 3: Cross multiply
    917,071.10x = 1,375,606.65 × 917,071.10
  4. Step 4: Simplify right side
    917,071.10x = 1,261,529,103,682.82
  5. Step 5: Solve for x
    x = 1,261,529,103,682.82/917,071.10
  6. Step 6: Final answer
    x = 1,375,606.65

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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.