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Finding the Fourth Proportional to 66,931.85, 92,368.50 and 36,718.44

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Solution

The fourth proportional to 66,931.85, 92,368.50 and 36,718.44 is: 50,672.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,931.85 : 92,368.50 = 36,718.44 : x
  2. Step 2: Convert to fraction form
    66,931.85/92,368.50 = 36,718.44/x
  3. Step 3: Cross multiply
    66,931.85x = 92,368.50 × 36,718.44
  4. Step 4: Simplify right side
    66,931.85x = 3,391,627,225.14
  5. Step 5: Solve for x
    x = 3,391,627,225.14/66,931.85
  6. Step 6: Final answer
    x = 50,672.84

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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.