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Finding the Fourth Proportional to 617,931.90, 866,970.90 and 617,931.90

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Solution

The fourth proportional to 617,931.90, 866,970.90 and 617,931.90 is: 866,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,931.90 : 866,970.90 = 617,931.90 : x
  2. Step 2: Convert to fraction form
    617,931.90/866,970.90 = 617,931.90/x
  3. Step 3: Cross multiply
    617,931.90x = 866,970.90 × 617,931.90
  4. Step 4: Simplify right side
    617,931.90x = 535,728,975,481.71
  5. Step 5: Solve for x
    x = 535,728,975,481.71/617,931.90
  6. Step 6: Final answer
    x = 866,970.90

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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.