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Finding the Fourth Proportional to 76,172.85, 105,008.99 and 53,441.42

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Solution

The fourth proportional to 76,172.85, 105,008.99 and 53,441.42 is: 73,672.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,172.85 : 105,008.99 = 53,441.42 : x
  2. Step 2: Convert to fraction form
    76,172.85/105,008.99 = 53,441.42/x
  3. Step 3: Cross multiply
    76,172.85x = 105,008.99 × 53,441.42
  4. Step 4: Simplify right side
    76,172.85x = 5,611,828,746.11
  5. Step 5: Solve for x
    x = 5,611,828,746.11/76,172.85
  6. Step 6: Final answer
    x = 73,672.30

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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.