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Finding the Fourth Proportional to 103,628.25, 155,494.22 and 47,468.25

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Solution

The fourth proportional to 103,628.25, 155,494.22 and 47,468.25 is: 71,226.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.25 : 155,494.22 = 47,468.25 : x
  2. Step 2: Convert to fraction form
    103,628.25/155,494.22 = 47,468.25/x
  3. Step 3: Cross multiply
    103,628.25x = 155,494.22 × 47,468.25
  4. Step 4: Simplify right side
    103,628.25x = 7,381,038,271.17
  5. Step 5: Solve for x
    x = 7,381,038,271.17/103,628.25
  6. Step 6: Final answer
    x = 71,226.12

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1.5x scale

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.