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Finding the Fourth Proportional to 353,284.09, 530,101.40 and 140,047.49

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Solution

The fourth proportional to 353,284.09, 530,101.40 and 140,047.49 is: 210,140.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,284.09 : 530,101.40 = 140,047.49 : x
  2. Step 2: Convert to fraction form
    353,284.09/530,101.40 = 140,047.49/x
  3. Step 3: Cross multiply
    353,284.09x = 530,101.40 × 140,047.49
  4. Step 4: Simplify right side
    353,284.09x = 74,239,370,515.49
  5. Step 5: Solve for x
    x = 74,239,370,515.49/353,284.09
  6. Step 6: Final answer
    x = 210,140.71

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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.