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Finding the Fourth Proportional to 91,673.26, 126,506.67 and 51,389.63

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Solution

The fourth proportional to 91,673.26, 126,506.67 and 51,389.63 is: 70,916.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,673.26 : 126,506.67 = 51,389.63 : x
  2. Step 2: Convert to fraction form
    91,673.26/126,506.67 = 51,389.63/x
  3. Step 3: Cross multiply
    91,673.26x = 126,506.67 × 51,389.63
  4. Step 4: Simplify right side
    91,673.26x = 6,501,130,963.83
  5. Step 5: Solve for x
    x = 6,501,130,963.83/91,673.26
  6. Step 6: Final answer
    x = 70,916.33

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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.