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Finding the Fourth Proportional to 66,549.53, 99,838.64 and 19,164.30

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Solution

The fourth proportional to 66,549.53, 99,838.64 and 19,164.30 is: 28,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,549.53 : 99,838.64 = 19,164.30 : x
  2. Step 2: Convert to fraction form
    66,549.53/99,838.64 = 19,164.30/x
  3. Step 3: Cross multiply
    66,549.53x = 99,838.64 × 19,164.30
  4. Step 4: Simplify right side
    66,549.53x = 1,913,337,648.55
  5. Step 5: Solve for x
    x = 1,913,337,648.55/66,549.53
  6. Step 6: Final answer
    x = 28,750.58

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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.