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Finding the Fourth Proportional to 66,854.79, 92,239.83 and 38,173.50

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Solution

The fourth proportional to 66,854.79, 92,239.83 and 38,173.50 is: 52,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,854.79 : 92,239.83 = 38,173.50 : x
  2. Step 2: Convert to fraction form
    66,854.79/92,239.83 = 38,173.50/x
  3. Step 3: Cross multiply
    66,854.79x = 92,239.83 × 38,173.50
  4. Step 4: Simplify right side
    66,854.79x = 3,521,117,150.51
  5. Step 5: Solve for x
    x = 3,521,117,150.51/66,854.79
  6. Step 6: Final answer
    x = 52,668.14

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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.