Home / 18,909,853.20-28,364,779.80-18,768,135.60

Finding the Fourth Proportional to 18,909,853.20, 28,364,779.80 and 18,768,135.60

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Solution

The fourth proportional to 18,909,853.20, 28,364,779.80 and 18,768,135.60 is: 28,152,203.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,853.20 : 28,364,779.80 = 18,768,135.60 : x
  2. Step 2: Convert to fraction form
    18,909,853.20/28,364,779.80 = 18,768,135.60/x
  3. Step 3: Cross multiply
    18,909,853.20x = 28,364,779.80 × 18,768,135.60
  4. Step 4: Simplify right side
    18,909,853.20x = 532,354,033,550,540.94
  5. Step 5: Solve for x
    x = 532,354,033,550,540.94/18,909,853.20
  6. Step 6: Final answer
    x = 28,152,203.40

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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.