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Finding the Fourth Proportional to 769,009.05, 1,153,513.58 and 769,009.05

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Solution

The fourth proportional to 769,009.05, 1,153,513.58 and 769,009.05 is: 1,153,513.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,009.05 : 1,153,513.58 = 769,009.05 : x
  2. Step 2: Convert to fraction form
    769,009.05/1,153,513.58 = 769,009.05/x
  3. Step 3: Cross multiply
    769,009.05x = 1,153,513.58 × 769,009.05
  4. Step 4: Simplify right side
    769,009.05x = 887,062,378,472.85
  5. Step 5: Solve for x
    x = 887,062,378,472.85/769,009.05
  6. Step 6: Final answer
    x = 1,153,513.58

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Double scale
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1.5x scale

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.