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Finding the Fourth Proportional to 572,338.71, 789,667.38 and 357,696.81

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Solution

The fourth proportional to 572,338.71, 789,667.38 and 357,696.81 is: 493,521.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,338.71 : 789,667.38 = 357,696.81 : x
  2. Step 2: Convert to fraction form
    572,338.71/789,667.38 = 357,696.81/x
  3. Step 3: Cross multiply
    572,338.71x = 789,667.38 × 357,696.81
  4. Step 4: Simplify right side
    572,338.71x = 282,461,502,787.06
  5. Step 5: Solve for x
    x = 282,461,502,787.06/572,338.71
  6. Step 6: Final answer
    x = 493,521.58

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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.