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Finding the Fourth Proportional to 191,894.40, 288,187.20 and 185,673.60

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Solution

The fourth proportional to 191,894.40, 288,187.20 and 185,673.60 is: 278,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,894.40 : 288,187.20 = 185,673.60 : x
  2. Step 2: Convert to fraction form
    191,894.40/288,187.20 = 185,673.60/x
  3. Step 3: Cross multiply
    191,894.40x = 288,187.20 × 185,673.60
  4. Step 4: Simplify right side
    191,894.40x = 53,508,754,897.92
  5. Step 5: Solve for x
    x = 53,508,754,897.92/191,894.40
  6. Step 6: Final answer
    x = 278,844.80

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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.