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Finding the Fourth Proportional to 66,665.63, 92,000.00 and 39,803.12

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Solution

The fourth proportional to 66,665.63, 92,000.00 and 39,803.12 is: 54,929.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,665.63 : 92,000.00 = 39,803.12 : x
  2. Step 2: Convert to fraction form
    66,665.63/92,000.00 = 39,803.12/x
  3. Step 3: Cross multiply
    66,665.63x = 92,000.00 × 39,803.12
  4. Step 4: Simplify right side
    66,665.63x = 3,661,886,840.98
  5. Step 5: Solve for x
    x = 3,661,886,840.98/66,665.63
  6. Step 6: Final answer
    x = 54,929.16

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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.