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Finding the Fourth Proportional to 35,715.80, 53,573.70 and 9,423.20

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Solution

The fourth proportional to 35,715.80, 53,573.70 and 9,423.20 is: 14,134.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,715.80 : 53,573.70 = 9,423.20 : x
  2. Step 2: Convert to fraction form
    35,715.80/53,573.70 = 9,423.20/x
  3. Step 3: Cross multiply
    35,715.80x = 53,573.70 × 9,423.20
  4. Step 4: Simplify right side
    35,715.80x = 504,835,689.84
  5. Step 5: Solve for x
    x = 504,835,689.84/35,715.80
  6. Step 6: Final answer
    x = 14,134.80

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1.5x scale

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.