Home / 128,528.24-192,800.52-39,774.29

Finding the Fourth Proportional to 128,528.24, 192,800.52 and 39,774.29

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Solution

The fourth proportional to 128,528.24, 192,800.52 and 39,774.29 is: 59,663.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,528.24 : 192,800.52 = 39,774.29 : x
  2. Step 2: Convert to fraction form
    128,528.24/192,800.52 = 39,774.29/x
  3. Step 3: Cross multiply
    128,528.24x = 192,800.52 × 39,774.29
  4. Step 4: Simplify right side
    128,528.24x = 7,668,502,830.63
  5. Step 5: Solve for x
    x = 7,668,502,830.63/128,528.24
  6. Step 6: Final answer
    x = 59,663.96

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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.