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Finding the Fourth Proportional to 78,527.84, 117,792.97 and 19,363.55

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Solution

The fourth proportional to 78,527.84, 117,792.97 and 19,363.55 is: 29,045.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,527.84 : 117,792.97 = 19,363.55 : x
  2. Step 2: Convert to fraction form
    78,527.84/117,792.97 = 19,363.55/x
  3. Step 3: Cross multiply
    78,527.84x = 117,792.97 × 19,363.55
  4. Step 4: Simplify right side
    78,527.84x = 2,280,889,426.87
  5. Step 5: Solve for x
    x = 2,280,889,426.87/78,527.84
  6. Step 6: Final answer
    x = 29,045.62

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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.