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Finding the Fourth Proportional to 66,410.55, 99,586.51 and 19,014.88

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Solution

The fourth proportional to 66,410.55, 99,586.51 and 19,014.88 is: 28,513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,410.55 : 99,586.51 = 19,014.88 : x
  2. Step 2: Convert to fraction form
    66,410.55/99,586.51 = 19,014.88/x
  3. Step 3: Cross multiply
    66,410.55x = 99,586.51 × 19,014.88
  4. Step 4: Simplify right side
    66,410.55x = 1,893,625,442.19
  5. Step 5: Solve for x
    x = 1,893,625,442.19/66,410.55
  6. Step 6: Final answer
    x = 28,513.93

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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.