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Finding the Fourth Proportional to 57,256,970.80, 79,989,698 and 57,256,970.80

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Solution

The fourth proportional to 57,256,970.80, 79,989,698 and 57,256,970.80 is: 79,989,698

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,256,970.80 : 79,989,698 = 57,256,970.80 : x
  2. Step 2: Convert to fraction form
    57,256,970.80/79,989,698 = 57,256,970.80/x
  3. Step 3: Cross multiply
    57,256,970.80x = 79,989,698 × 57,256,970.80
  4. Step 4: Simplify right side
    57,256,970.80x = 4,579,967,802,686,818
  5. Step 5: Solve for x
    x = 4,579,967,802,686,818/57,256,970.80
  6. Step 6: Final answer
    x = 79,989,698

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.