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Finding the Fourth Proportional to 554,807,968.77, 765,647,368.47 and 316,648,376.31

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Solution

The fourth proportional to 554,807,968.77, 765,647,368.47 and 316,648,376.31 is: 436,981,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,807,968.77 : 765,647,368.47 = 316,648,376.31 : x
  2. Step 2: Convert to fraction form
    554,807,968.77/765,647,368.47 = 316,648,376.31/x
  3. Step 3: Cross multiply
    554,807,968.77x = 765,647,368.47 × 316,648,376.31
  4. Step 4: Simplify right side
    554,807,968.77x = 242,440,996,052,049,792
  5. Step 5: Solve for x
    x = 242,440,996,052,049,792/554,807,968.77
  6. Step 6: Final answer
    x = 436,981,820.20

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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.