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Finding the Fourth Proportional to 66,717.94, 92,053.47 and 39,848.62

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Solution

The fourth proportional to 66,717.94, 92,053.47 and 39,848.62 is: 54,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,717.94 : 92,053.47 = 39,848.62 : x
  2. Step 2: Convert to fraction form
    66,717.94/92,053.47 = 39,848.62/x
  3. Step 3: Cross multiply
    66,717.94x = 92,053.47 × 39,848.62
  4. Step 4: Simplify right side
    66,717.94x = 3,668,203,745.71
  5. Step 5: Solve for x
    x = 3,668,203,745.71/66,717.94
  6. Step 6: Final answer
    x = 54,980.77

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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.