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Finding the Fourth Proportional to 626,683, 864,823.62 and 358,411

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Solution

The fourth proportional to 626,683, 864,823.62 and 358,411 is: 494,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,683 : 864,823.62 = 358,411 : x
  2. Step 2: Convert to fraction form
    626,683/864,823.62 = 358,411/x
  3. Step 3: Cross multiply
    626,683x = 864,823.62 × 358,411
  4. Step 4: Simplify right side
    626,683x = 309,962,298,467.82
  5. Step 5: Solve for x
    x = 309,962,298,467.82/626,683
  6. Step 6: Final answer
    x = 494,607.80

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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.