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Finding the Fourth Proportional to 193,303.60, 289,838.92 and 86,668.28

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Solution

The fourth proportional to 193,303.60, 289,838.92 and 86,668.28 is: 129,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,303.60 : 289,838.92 = 86,668.28 : x
  2. Step 2: Convert to fraction form
    193,303.60/289,838.92 = 86,668.28/x
  3. Step 3: Cross multiply
    193,303.60x = 289,838.92 × 86,668.28
  4. Step 4: Simplify right side
    193,303.60x = 25,119,840,673.46
  5. Step 5: Solve for x
    x = 25,119,840,673.46/193,303.60
  6. Step 6: Final answer
    x = 129,950.20

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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.