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Finding the Fourth Proportional to 70,875.63, 106,280.10 and 26,490.60

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Solution

The fourth proportional to 70,875.63, 106,280.10 and 26,490.60 is: 39,723.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,875.63 : 106,280.10 = 26,490.60 : x
  2. Step 2: Convert to fraction form
    70,875.63/106,280.10 = 26,490.60/x
  3. Step 3: Cross multiply
    70,875.63x = 106,280.10 × 26,490.60
  4. Step 4: Simplify right side
    70,875.63x = 2,815,423,617.06
  5. Step 5: Solve for x
    x = 2,815,423,617.06/70,875.63
  6. Step 6: Final answer
    x = 39,723.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.