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Finding the Fourth Proportional to 223,666.94, 308,668.86 and 128,192.06

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Solution

The fourth proportional to 223,666.94, 308,668.86 and 128,192.06 is: 176,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,666.94 : 308,668.86 = 128,192.06 : x
  2. Step 2: Convert to fraction form
    223,666.94/308,668.86 = 128,192.06/x
  3. Step 3: Cross multiply
    223,666.94x = 308,668.86 × 128,192.06
  4. Step 4: Simplify right side
    223,666.94x = 39,568,895,477.91
  5. Step 5: Solve for x
    x = 39,568,895,477.91/223,666.94
  6. Step 6: Final answer
    x = 176,909.90

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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.