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Finding the Fourth Proportional to 692,830,689.80, 956,098,384.20 and 375,284,949.21

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Solution

The fourth proportional to 692,830,689.80, 956,098,384.20 and 375,284,949.21 is: 517,888,914.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,830,689.80 : 956,098,384.20 = 375,284,949.21 : x
  2. Step 2: Convert to fraction form
    692,830,689.80/956,098,384.20 = 375,284,949.21/x
  3. Step 3: Cross multiply
    692,830,689.80x = 956,098,384.20 × 375,284,949.21
  4. Step 4: Simplify right side
    692,830,689.80x = 358,809,333,554,260,032
  5. Step 5: Solve for x
    x = 358,809,333,554,260,032/692,830,689.80
  6. Step 6: Final answer
    x = 517,888,914.04

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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.