Home / 20,235,518.60-30,353,277.90-13,778,510.45

Finding the Fourth Proportional to 20,235,518.60, 30,353,277.90 and 13,778,510.45

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Solution

The fourth proportional to 20,235,518.60, 30,353,277.90 and 13,778,510.45 is: 20,667,765.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235,518.60 : 30,353,277.90 = 13,778,510.45 : x
  2. Step 2: Convert to fraction form
    20,235,518.60/30,353,277.90 = 13,778,510.45/x
  3. Step 3: Cross multiply
    20,235,518.60x = 30,353,277.90 × 13,778,510.45
  4. Step 4: Simplify right side
    20,235,518.60x = 418,222,956,736,904
  5. Step 5: Solve for x
    x = 418,222,956,736,904/20,235,518.60
  6. Step 6: Final answer
    x = 20,667,765.68

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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.