Home / 85,344,015.40-128,016,023.10-21,518,607.40

Finding the Fourth Proportional to 85,344,015.40, 128,016,023.10 and 21,518,607.40

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Solution

The fourth proportional to 85,344,015.40, 128,016,023.10 and 21,518,607.40 is: 32,277,911.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,344,015.40 : 128,016,023.10 = 21,518,607.40 : x
  2. Step 2: Convert to fraction form
    85,344,015.40/128,016,023.10 = 21,518,607.40/x
  3. Step 3: Cross multiply
    85,344,015.40x = 128,016,023.10 × 21,518,607.40
  4. Step 4: Simplify right side
    85,344,015.40x = 2,754,726,541,998,230.50
  5. Step 5: Solve for x
    x = 2,754,726,541,998,230.50/85,344,015.40
  6. Step 6: Final answer
    x = 32,277,911.10

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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.