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Finding the Fourth Proportional to 697,762.55, 962,409.09 and 640,583.44

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Solution

The fourth proportional to 697,762.55, 962,409.09 and 640,583.44 is: 883,543.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,762.55 : 962,409.09 = 640,583.44 : x
  2. Step 2: Convert to fraction form
    697,762.55/962,409.09 = 640,583.44/x
  3. Step 3: Cross multiply
    697,762.55x = 962,409.09 × 640,583.44
  4. Step 4: Simplify right side
    697,762.55x = 616,503,325,555.64
  5. Step 5: Solve for x
    x = 616,503,325,555.64/697,762.55
  6. Step 6: Final answer
    x = 883,543.15

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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.