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Finding the Fourth Proportional to 66,798.18, 92,358.72 and 58,390.56

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Solution

The fourth proportional to 66,798.18, 92,358.72 and 58,390.56 is: 80,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,798.18 : 92,358.72 = 58,390.56 : x
  2. Step 2: Convert to fraction form
    66,798.18/92,358.72 = 58,390.56/x
  3. Step 3: Cross multiply
    66,798.18x = 92,358.72 × 58,390.56
  4. Step 4: Simplify right side
    66,798.18x = 5,392,877,381.68
  5. Step 5: Solve for x
    x = 5,392,877,381.68/66,798.18
  6. Step 6: Final answer
    x = 80,733.90

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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.