Home / 12,928,623.45-17,841,637.86-7,127,612.79

Finding the Fourth Proportional to 12,928,623.45, 17,841,637.86 and 7,127,612.79

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Solution

The fourth proportional to 12,928,623.45, 17,841,637.86 and 7,127,612.79 is: 9,836,181.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928,623.45 : 17,841,637.86 = 7,127,612.79 : x
  2. Step 2: Convert to fraction form
    12,928,623.45/17,841,637.86 = 7,127,612.79/x
  3. Step 3: Cross multiply
    12,928,623.45x = 17,841,637.86 × 7,127,612.79
  4. Step 4: Simplify right side
    12,928,623.45x = 127,168,286,205,484.22
  5. Step 5: Solve for x
    x = 127,168,286,205,484.22/12,928,623.45
  6. Step 6: Final answer
    x = 9,836,181.45

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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.