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Finding the Fourth Proportional to 570,985.60, 856,276.80 and 196,921.60

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Solution

The fourth proportional to 570,985.60, 856,276.80 and 196,921.60 is: 295,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,985.60 : 856,276.80 = 196,921.60 : x
  2. Step 2: Convert to fraction form
    570,985.60/856,276.80 = 196,921.60/x
  3. Step 3: Cross multiply
    570,985.60x = 856,276.80 × 196,921.60
  4. Step 4: Simplify right side
    570,985.60x = 168,619,397,498.88
  5. Step 5: Solve for x
    x = 168,619,397,498.88/570,985.60
  6. Step 6: Final answer
    x = 295,312.87

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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.