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Finding the Fourth Proportional to 317,952,053.70, 476,928,080.55 and 99,620,636.10

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Solution

The fourth proportional to 317,952,053.70, 476,928,080.55 and 99,620,636.10 is: 149,430,954.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,952,053.70 : 476,928,080.55 = 99,620,636.10 : x
  2. Step 2: Convert to fraction form
    317,952,053.70/476,928,080.55 = 99,620,636.10/x
  3. Step 3: Cross multiply
    317,952,053.70x = 476,928,080.55 × 99,620,636.10
  4. Step 4: Simplify right side
    317,952,053.70x = 47,511,878,758,343,040
  5. Step 5: Solve for x
    x = 47,511,878,758,343,040/317,952,053.70
  6. Step 6: Final answer
    x = 149,430,954.15

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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.