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Finding the Fourth Proportional to 865,116.90, 1,297,675.35 and 865,116.90

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Solution

The fourth proportional to 865,116.90, 1,297,675.35 and 865,116.90 is: 1,297,675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,116.90 : 1,297,675.35 = 865,116.90 : x
  2. Step 2: Convert to fraction form
    865,116.90/1,297,675.35 = 865,116.90/x
  3. Step 3: Cross multiply
    865,116.90x = 1,297,675.35 × 865,116.90
  4. Step 4: Simplify right side
    865,116.90x = 1,122,640,875,998.42
  5. Step 5: Solve for x
    x = 1,122,640,875,998.42/865,116.90
  6. Step 6: Final answer
    x = 1,297,675.35

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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.