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Finding the Fourth Proportional to 257,049.64, 385,563.12 and 70,061.14

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Solution

The fourth proportional to 257,049.64, 385,563.12 and 70,061.14 is: 105,088.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,049.64 : 385,563.12 = 70,061.14 : x
  2. Step 2: Convert to fraction form
    257,049.64/385,563.12 = 70,061.14/x
  3. Step 3: Cross multiply
    257,049.64x = 385,563.12 × 70,061.14
  4. Step 4: Simplify right side
    257,049.64x = 27,012,991,729.16
  5. Step 5: Solve for x
    x = 27,012,991,729.16/257,049.64
  6. Step 6: Final answer
    x = 105,088.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.