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Finding the Fourth Proportional to 572,556.84, 790,124.40 and 317,909.04

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Solution

The fourth proportional to 572,556.84, 790,124.40 and 317,909.04 is: 438,712.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,556.84 : 790,124.40 = 317,909.04 : x
  2. Step 2: Convert to fraction form
    572,556.84/790,124.40 = 317,909.04/x
  3. Step 3: Cross multiply
    572,556.84x = 790,124.40 × 317,909.04
  4. Step 4: Simplify right side
    572,556.84x = 251,187,689,484.58
  5. Step 5: Solve for x
    x = 251,187,689,484.58/572,556.84
  6. Step 6: Final answer
    x = 438,712.23

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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.