Home / 12,686,996,669.40-19,030,495,004.10-7,728,014,410.20

Finding the Fourth Proportional to 12,686,996,669.40, 19,030,495,004.10 and 7,728,014,410.20

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Solution

The fourth proportional to 12,686,996,669.40, 19,030,495,004.10 and 7,728,014,410.20 is: 11,592,021,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686,996,669.40 : 19,030,495,004.10 = 7,728,014,410.20 : x
  2. Step 2: Convert to fraction form
    12,686,996,669.40/19,030,495,004.10 = 7,728,014,410.20/x
  3. Step 3: Cross multiply
    12,686,996,669.40x = 19,030,495,004.10 × 7,728,014,410.20
  4. Step 4: Simplify right side
    12,686,996,669.40x = 147,067,939,624,923,889,664
  5. Step 5: Solve for x
    x = 147,067,939,624,923,889,664/12,686,996,669.40
  6. Step 6: Final answer
    x = 11,592,021,615.30

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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.