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Finding the Fourth Proportional to 64,653.12, 89,223.08 and 39,154.10

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Solution

The fourth proportional to 64,653.12, 89,223.08 and 39,154.10 is: 54,033.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,653.12 : 89,223.08 = 39,154.10 : x
  2. Step 2: Convert to fraction form
    64,653.12/89,223.08 = 39,154.10/x
  3. Step 3: Cross multiply
    64,653.12x = 89,223.08 × 39,154.10
  4. Step 4: Simplify right side
    64,653.12x = 3,493,448,754.74
  5. Step 5: Solve for x
    x = 3,493,448,754.74/64,653.12
  6. Step 6: Final answer
    x = 54,033.72

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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.