Home / 28,579,220,359.25-39,439,356,792.96-15,891,683,619.74

Finding the Fourth Proportional to 28,579,220,359.25, 39,439,356,792.96 and 15,891,683,619.74

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Solution

The fourth proportional to 28,579,220,359.25, 39,439,356,792.96 and 15,891,683,619.74 is: 21,930,541,576.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579,220,359.25 : 39,439,356,792.96 = 15,891,683,619.74 : x
  2. Step 2: Convert to fraction form
    28,579,220,359.25/39,439,356,792.96 = 15,891,683,619.74/x
  3. Step 3: Cross multiply
    28,579,220,359.25x = 39,439,356,792.96 × 15,891,683,619.74
  4. Step 4: Simplify right side
    28,579,220,359.25x = 626,757,780,319,566,692,352
  5. Step 5: Solve for x
    x = 626,757,780,319,566,692,352/28,579,220,359.25
  6. Step 6: Final answer
    x = 21,930,541,576.75

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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.