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Finding the Fourth Proportional to 66,366.51, 99,549.78 and 19,615.74

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Solution

The fourth proportional to 66,366.51, 99,549.78 and 19,615.74 is: 29,423.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,366.51 : 99,549.78 = 19,615.74 : x
  2. Step 2: Convert to fraction form
    66,366.51/99,549.78 = 19,615.74/x
  3. Step 3: Cross multiply
    66,366.51x = 99,549.78 × 19,615.74
  4. Step 4: Simplify right side
    66,366.51x = 1,952,742,601.54
  5. Step 5: Solve for x
    x = 1,952,742,601.54/66,366.51
  6. Step 6: Final answer
    x = 29,423.61

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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.