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Finding the Fourth Proportional to 617,923.40, 866,959 and 617,923.40

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Solution

The fourth proportional to 617,923.40, 866,959 and 617,923.40 is: 866,959

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,923.40 : 866,959 = 617,923.40 : x
  2. Step 2: Convert to fraction form
    617,923.40/866,959 = 617,923.40/x
  3. Step 3: Cross multiply
    617,923.40x = 866,959 × 617,923.40
  4. Step 4: Simplify right side
    617,923.40x = 535,714,252,940.60
  5. Step 5: Solve for x
    x = 535,714,252,940.60/617,923.40
  6. Step 6: Final answer
    x = 866,959

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.