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Finding the Fourth Proportional to 776,784.62, 1,071,672.62 and 775,587.12

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Solution

The fourth proportional to 776,784.62, 1,071,672.62 and 775,587.12 is: 1,070,020.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,784.62 : 1,071,672.62 = 775,587.12 : x
  2. Step 2: Convert to fraction form
    776,784.62/1,071,672.62 = 775,587.12/x
  3. Step 3: Cross multiply
    776,784.62x = 1,071,672.62 × 775,587.12
  4. Step 4: Simplify right side
    776,784.62x = 831,175,480,928.66
  5. Step 5: Solve for x
    x = 831,175,480,928.66/776,784.62
  6. Step 6: Final answer
    x = 1,070,020.52

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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.