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Finding the Fourth Proportional to 541,405.70, 812,217.90 and 186,455.60

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Solution

The fourth proportional to 541,405.70, 812,217.90 and 186,455.60 is: 279,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,405.70 : 812,217.90 = 186,455.60 : x
  2. Step 2: Convert to fraction form
    541,405.70/812,217.90 = 186,455.60/x
  3. Step 3: Cross multiply
    541,405.70x = 812,217.90 × 186,455.60
  4. Step 4: Simplify right side
    541,405.70x = 151,442,575,875.24
  5. Step 5: Solve for x
    x = 151,442,575,875.24/541,405.70
  6. Step 6: Final answer
    x = 279,721.06

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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.