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Finding the Fourth Proportional to 113,668.29, 156,855.78 and 70,646.67

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Solution

The fourth proportional to 113,668.29, 156,855.78 and 70,646.67 is: 97,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,668.29 : 156,855.78 = 70,646.67 : x
  2. Step 2: Convert to fraction form
    113,668.29/156,855.78 = 70,646.67/x
  3. Step 3: Cross multiply
    113,668.29x = 156,855.78 × 70,646.67
  4. Step 4: Simplify right side
    113,668.29x = 11,081,338,527.25
  5. Step 5: Solve for x
    x = 11,081,338,527.25/113,668.29
  6. Step 6: Final answer
    x = 97,488.39

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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.