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Finding the Fourth Proportional to 697,107.78, 955,743.05 and 684,510.66

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Solution

The fourth proportional to 697,107.78, 955,743.05 and 684,510.66 is: 938,472.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,107.78 : 955,743.05 = 684,510.66 : x
  2. Step 2: Convert to fraction form
    697,107.78/955,743.05 = 684,510.66/x
  3. Step 3: Cross multiply
    697,107.78x = 955,743.05 × 684,510.66
  4. Step 4: Simplify right side
    697,107.78x = 654,216,302,523.36
  5. Step 5: Solve for x
    x = 654,216,302,523.36/697,107.78
  6. Step 6: Final answer
    x = 938,472.24

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.