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Finding the Fourth Proportional to 278,483.85, 417,889.80 and 183,987.23

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Solution

The fourth proportional to 278,483.85, 417,889.80 and 183,987.23 is: 276,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,483.85 : 417,889.80 = 183,987.23 : x
  2. Step 2: Convert to fraction form
    278,483.85/417,889.80 = 183,987.23/x
  3. Step 3: Cross multiply
    278,483.85x = 417,889.80 × 183,987.23
  4. Step 4: Simplify right side
    278,483.85x = 76,886,384,657.81
  5. Step 5: Solve for x
    x = 76,886,384,657.81/278,483.85
  6. Step 6: Final answer
    x = 276,089.20

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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.