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Finding the Fourth Proportional to 91,916.70, 126,825.37 and 53,658.89

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Solution

The fourth proportional to 91,916.70, 126,825.37 and 53,658.89 is: 74,037.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,916.70 : 126,825.37 = 53,658.89 : x
  2. Step 2: Convert to fraction form
    91,916.70/126,825.37 = 53,658.89/x
  3. Step 3: Cross multiply
    91,916.70x = 126,825.37 × 53,658.89
  4. Step 4: Simplify right side
    91,916.70x = 6,805,307,675.62
  5. Step 5: Solve for x
    x = 6,805,307,675.62/91,916.70
  6. Step 6: Final answer
    x = 74,037.77

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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.