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Finding the Fourth Proportional to 66,875.91, 92,295.36 and 38,199.86

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Solution

The fourth proportional to 66,875.91, 92,295.36 and 38,199.86 is: 52,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,875.91 : 92,295.36 = 38,199.86 : x
  2. Step 2: Convert to fraction form
    66,875.91/92,295.36 = 38,199.86/x
  3. Step 3: Cross multiply
    66,875.91x = 92,295.36 × 38,199.86
  4. Step 4: Simplify right side
    66,875.91x = 3,525,669,178.17
  5. Step 5: Solve for x
    x = 3,525,669,178.17/66,875.91
  6. Step 6: Final answer
    x = 52,719.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.