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Finding the Fourth Proportional to 509,686.60, 764,529.90 and 154,683.40

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Solution

The fourth proportional to 509,686.60, 764,529.90 and 154,683.40 is: 232,025.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,686.60 : 764,529.90 = 154,683.40 : x
  2. Step 2: Convert to fraction form
    509,686.60/764,529.90 = 154,683.40/x
  3. Step 3: Cross multiply
    509,686.60x = 764,529.90 × 154,683.40
  4. Step 4: Simplify right side
    509,686.60x = 118,260,084,333.66
  5. Step 5: Solve for x
    x = 118,260,084,333.66/509,686.60
  6. Step 6: Final answer
    x = 232,025.10

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Similar ratio
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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.