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Finding the Fourth Proportional to 402,728.60, 604,311.60 and 166,095.20

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Solution

The fourth proportional to 402,728.60, 604,311.60 and 166,095.20 is: 249,233.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,728.60 : 604,311.60 = 166,095.20 : x
  2. Step 2: Convert to fraction form
    402,728.60/604,311.60 = 166,095.20/x
  3. Step 3: Cross multiply
    402,728.60x = 604,311.60 × 166,095.20
  4. Step 4: Simplify right side
    402,728.60x = 100,373,256,064.32
  5. Step 5: Solve for x
    x = 100,373,256,064.32/402,728.60
  6. Step 6: Final answer
    x = 249,233.00

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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.