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Finding the Fourth Proportional to 686,395.36, 945,267.24 and 617,828.32

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Solution

The fourth proportional to 686,395.36, 945,267.24 and 617,828.32 is: 850,840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,395.36 : 945,267.24 = 617,828.32 : x
  2. Step 2: Convert to fraction form
    686,395.36/945,267.24 = 617,828.32/x
  3. Step 3: Cross multiply
    686,395.36x = 945,267.24 × 617,828.32
  4. Step 4: Simplify right side
    686,395.36x = 584,012,870,840.24
  5. Step 5: Solve for x
    x = 584,012,870,840.24/686,395.36
  6. Step 6: Final answer
    x = 850,840.35

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1.5x scale

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.