Home / 12,127,969.40-18,191,954.10-7,345,000.40

Finding the Fourth Proportional to 12,127,969.40, 18,191,954.10 and 7,345,000.40

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Solution

The fourth proportional to 12,127,969.40, 18,191,954.10 and 7,345,000.40 is: 11,017,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,969.40 : 18,191,954.10 = 7,345,000.40 : x
  2. Step 2: Convert to fraction form
    12,127,969.40/18,191,954.10 = 7,345,000.40/x
  3. Step 3: Cross multiply
    12,127,969.40x = 18,191,954.10 × 7,345,000.40
  4. Step 4: Simplify right side
    12,127,969.40x = 133,619,910,141,281.66
  5. Step 5: Solve for x
    x = 133,619,910,141,281.66/12,127,969.40
  6. Step 6: Final answer
    x = 11,017,500.60

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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.