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Finding the Fourth Proportional to 64,864.94, 89,515.20 and 36,184.40

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Solution

The fourth proportional to 64,864.94, 89,515.20 and 36,184.40 is: 49,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,864.94 : 89,515.20 = 36,184.40 : x
  2. Step 2: Convert to fraction form
    64,864.94/89,515.20 = 36,184.40/x
  3. Step 3: Cross multiply
    64,864.94x = 89,515.20 × 36,184.40
  4. Step 4: Simplify right side
    64,864.94x = 3,239,053,802.88
  5. Step 5: Solve for x
    x = 3,239,053,802.88/64,864.94
  6. Step 6: Final answer
    x = 49,935.35

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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.