Home / 18,693,141.60-28,039,712.40-8,615,445.60

Finding the Fourth Proportional to 18,693,141.60, 28,039,712.40 and 8,615,445.60

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Solution

The fourth proportional to 18,693,141.60, 28,039,712.40 and 8,615,445.60 is: 12,923,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693,141.60 : 28,039,712.40 = 8,615,445.60 : x
  2. Step 2: Convert to fraction form
    18,693,141.60/28,039,712.40 = 8,615,445.60/x
  3. Step 3: Cross multiply
    18,693,141.60x = 28,039,712.40 × 8,615,445.60
  4. Step 4: Simplify right side
    18,693,141.60x = 241,574,616,821,845.41
  5. Step 5: Solve for x
    x = 241,574,616,821,845.41/18,693,141.60
  6. Step 6: Final answer
    x = 12,923,168.40

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Double scale
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Similar ratio
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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.