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Finding the Fourth Proportional to 235,358.17, 353,187.61 and 85,584.21

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Solution

The fourth proportional to 235,358.17, 353,187.61 and 85,584.21 is: 128,430.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,358.17 : 353,187.61 = 85,584.21 : x
  2. Step 2: Convert to fraction form
    235,358.17/353,187.61 = 85,584.21/x
  3. Step 3: Cross multiply
    235,358.17x = 353,187.61 × 85,584.21
  4. Step 4: Simplify right side
    235,358.17x = 30,227,281,045.22
  5. Step 5: Solve for x
    x = 30,227,281,045.22/235,358.17
  6. Step 6: Final answer
    x = 128,430.98

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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.