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Finding the Fourth Proportional to 107,525.72, 148,369.23 and 61,578.21

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Solution

The fourth proportional to 107,525.72, 148,369.23 and 61,578.21 is: 84,968.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,525.72 : 148,369.23 = 61,578.21 : x
  2. Step 2: Convert to fraction form
    107,525.72/148,369.23 = 61,578.21/x
  3. Step 3: Cross multiply
    107,525.72x = 148,369.23 × 61,578.21
  4. Step 4: Simplify right side
    107,525.72x = 9,136,311,602.48
  5. Step 5: Solve for x
    x = 9,136,311,602.48/107,525.72
  6. Step 6: Final answer
    x = 84,968.62

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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.