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Finding the Fourth Proportional to 346,611.60, 520,090.20 and 196,966.80

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Solution

The fourth proportional to 346,611.60, 520,090.20 and 196,966.80 is: 295,548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,611.60 : 520,090.20 = 196,966.80 : x
  2. Step 2: Convert to fraction form
    346,611.60/520,090.20 = 196,966.80/x
  3. Step 3: Cross multiply
    346,611.60x = 520,090.20 × 196,966.80
  4. Step 4: Simplify right side
    346,611.60x = 102,440,502,405.36
  5. Step 5: Solve for x
    x = 102,440,502,405.36/346,611.60
  6. Step 6: Final answer
    x = 295,548.40

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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.