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Finding the Fourth Proportional to 691,783.20, 954,297.70 and 562,865.80

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Solution

The fourth proportional to 691,783.20, 954,297.70 and 562,865.80 is: 776,459.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,783.20 : 954,297.70 = 562,865.80 : x
  2. Step 2: Convert to fraction form
    691,783.20/954,297.70 = 562,865.80/x
  3. Step 3: Cross multiply
    691,783.20x = 954,297.70 × 562,865.80
  4. Step 4: Simplify right side
    691,783.20x = 537,141,538,348.66
  5. Step 5: Solve for x
    x = 537,141,538,348.66/691,783.20
  6. Step 6: Final answer
    x = 776,459.36

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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.