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Finding the Fourth Proportional to 66,951.63, 92,400.51 and 42,774.68

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Solution

The fourth proportional to 66,951.63, 92,400.51 and 42,774.68 is: 59,033.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,951.63 : 92,400.51 = 42,774.68 : x
  2. Step 2: Convert to fraction form
    66,951.63/92,400.51 = 42,774.68/x
  3. Step 3: Cross multiply
    66,951.63x = 92,400.51 × 42,774.68
  4. Step 4: Simplify right side
    66,951.63x = 3,952,402,638.49
  5. Step 5: Solve for x
    x = 3,952,402,638.49/66,951.63
  6. Step 6: Final answer
    x = 59,033.70

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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.