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Finding the Fourth Proportional to 66,339.71, 99,522.69 and 18,955.23

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Solution

The fourth proportional to 66,339.71, 99,522.69 and 18,955.23 is: 28,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,339.71 : 99,522.69 = 18,955.23 : x
  2. Step 2: Convert to fraction form
    66,339.71/99,522.69 = 18,955.23/x
  3. Step 3: Cross multiply
    66,339.71x = 99,522.69 × 18,955.23
  4. Step 4: Simplify right side
    66,339.71x = 1,886,475,479.17
  5. Step 5: Solve for x
    x = 1,886,475,479.17/66,339.71
  6. Step 6: Final answer
    x = 28,436.60

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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.