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Finding the Fourth Proportional to 317,692.74, 438,423.12 and 174,453.42

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Solution

The fourth proportional to 317,692.74, 438,423.12 and 174,453.42 is: 240,749.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,692.74 : 438,423.12 = 174,453.42 : x
  2. Step 2: Convert to fraction form
    317,692.74/438,423.12 = 174,453.42/x
  3. Step 3: Cross multiply
    317,692.74x = 438,423.12 × 174,453.42
  4. Step 4: Simplify right side
    317,692.74x = 76,484,412,691.07
  5. Step 5: Solve for x
    x = 76,484,412,691.07/317,692.74
  6. Step 6: Final answer
    x = 240,749.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.