Home / 12,688,328-17,507,634.72-7,181,675.84

Finding the Fourth Proportional to 12,688,328, 17,507,634.72 and 7,181,675.84

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Solution

The fourth proportional to 12,688,328, 17,507,634.72 and 7,181,675.84 is: 9,909,434.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688,328 : 17,507,634.72 = 7,181,675.84 : x
  2. Step 2: Convert to fraction form
    12,688,328/17,507,634.72 = 7,181,675.84/x
  3. Step 3: Cross multiply
    12,688,328x = 17,507,634.72 × 7,181,675.84
  4. Step 4: Simplify right side
    12,688,328x = 125,734,157,284,169.16
  5. Step 5: Solve for x
    x = 125,734,157,284,169.16/12,688,328
  6. Step 6: Final answer
    x = 9,909,434.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.