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Finding the Fourth Proportional to 191,783.40, 288,020.70 and 185,562.60

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Solution

The fourth proportional to 191,783.40, 288,020.70 and 185,562.60 is: 278,678.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,783.40 : 288,020.70 = 185,562.60 : x
  2. Step 2: Convert to fraction form
    191,783.40/288,020.70 = 185,562.60/x
  3. Step 3: Cross multiply
    191,783.40x = 288,020.70 × 185,562.60
  4. Step 4: Simplify right side
    191,783.40x = 53,445,869,945.82
  5. Step 5: Solve for x
    x = 53,445,869,945.82/191,783.40
  6. Step 6: Final answer
    x = 278,678.29

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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.