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Finding the Fourth Proportional to 66,280.17, 99,420.83 and 18,895.17

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Solution

The fourth proportional to 66,280.17, 99,420.83 and 18,895.17 is: 28,342.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,280.17 : 99,420.83 = 18,895.17 : x
  2. Step 2: Convert to fraction form
    66,280.17/99,420.83 = 18,895.17/x
  3. Step 3: Cross multiply
    66,280.17x = 99,420.83 × 18,895.17
  4. Step 4: Simplify right side
    66,280.17x = 1,878,573,389.92
  5. Step 5: Solve for x
    x = 1,878,573,389.92/66,280.17
  6. Step 6: Final answer
    x = 28,342.92

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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.