Home / 287,828,138.80-431,387,914.20-195,711,698.80

Finding the Fourth Proportional to 287,828,138.80, 431,387,914.20 and 195,711,698.80

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Solution

The fourth proportional to 287,828,138.80, 431,387,914.20 and 195,711,698.80 is: 293,326,642.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,828,138.80 : 431,387,914.20 = 195,711,698.80 : x
  2. Step 2: Convert to fraction form
    287,828,138.80/431,387,914.20 = 195,711,698.80/x
  3. Step 3: Cross multiply
    287,828,138.80x = 431,387,914.20 × 195,711,698.80
  4. Step 4: Simplify right side
    287,828,138.80x = 84,427,661,529,870,640
  5. Step 5: Solve for x
    x = 84,427,661,529,870,640/287,828,138.80
  6. Step 6: Final answer
    x = 293,326,642.36

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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.