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Finding the Fourth Proportional to 199,339.80, 299,024.10 and 66,312.60

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Solution

The fourth proportional to 199,339.80, 299,024.10 and 66,312.60 is: 99,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,339.80 : 299,024.10 = 66,312.60 : x
  2. Step 2: Convert to fraction form
    199,339.80/299,024.10 = 66,312.60/x
  3. Step 3: Cross multiply
    199,339.80x = 299,024.10 × 66,312.60
  4. Step 4: Simplify right side
    199,339.80x = 19,829,065,533.66
  5. Step 5: Solve for x
    x = 19,829,065,533.66/199,339.80
  6. Step 6: Final answer
    x = 99,473.69

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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.