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Finding the Fourth Proportional to 190,360.80, 285,411.60 and 72,014.40

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Solution

The fourth proportional to 190,360.80, 285,411.60 and 72,014.40 is: 107,972.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,360.80 : 285,411.60 = 72,014.40 : x
  2. Step 2: Convert to fraction form
    190,360.80/285,411.60 = 72,014.40/x
  3. Step 3: Cross multiply
    190,360.80x = 285,411.60 × 72,014.40
  4. Step 4: Simplify right side
    190,360.80x = 20,553,745,127.04
  5. Step 5: Solve for x
    x = 20,553,745,127.04/190,360.80
  6. Step 6: Final answer
    x = 107,972.57

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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.