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Finding the Fourth Proportional to 562,964.40, 776,862.08 and 308,266.40

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Solution

The fourth proportional to 562,964.40, 776,862.08 and 308,266.40 is: 425,391.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,964.40 : 776,862.08 = 308,266.40 : x
  2. Step 2: Convert to fraction form
    562,964.40/776,862.08 = 308,266.40/x
  3. Step 3: Cross multiply
    562,964.40x = 776,862.08 × 308,266.40
  4. Step 4: Simplify right side
    562,964.40x = 239,480,476,698.11
  5. Step 5: Solve for x
    x = 239,480,476,698.11/562,964.40
  6. Step 6: Final answer
    x = 425,391.87

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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.