Home / 30,456,478.40-42,039,351.60-19,591,462.40

Finding the Fourth Proportional to 30,456,478.40, 42,039,351.60 and 19,591,462.40

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Solution

The fourth proportional to 30,456,478.40, 42,039,351.60 and 19,591,462.40 is: 27,042,272.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,456,478.40 : 42,039,351.60 = 19,591,462.40 : x
  2. Step 2: Convert to fraction form
    30,456,478.40/42,039,351.60 = 19,591,462.40/x
  3. Step 3: Cross multiply
    30,456,478.40x = 42,039,351.60 × 19,591,462.40
  4. Step 4: Simplify right side
    30,456,478.40x = 823,612,376,191,779.75
  5. Step 5: Solve for x
    x = 823,612,376,191,779.75/30,456,478.40
  6. Step 6: Final answer
    x = 27,042,272.10

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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.