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Finding the Fourth Proportional to 434,574.60, 651,926.70 and 154,069.80

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Solution

The fourth proportional to 434,574.60, 651,926.70 and 154,069.80 is: 231,127.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,574.60 : 651,926.70 = 154,069.80 : x
  2. Step 2: Convert to fraction form
    434,574.60/651,926.70 = 154,069.80/x
  3. Step 3: Cross multiply
    434,574.60x = 651,926.70 × 154,069.80
  4. Step 4: Simplify right side
    434,574.60x = 100,442,216,283.66
  5. Step 5: Solve for x
    x = 100,442,216,283.66/434,574.60
  6. Step 6: Final answer
    x = 231,127.67

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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.