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Finding the Fourth Proportional to 572,525.30, 790,109.59 and 317,876.50

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Solution

The fourth proportional to 572,525.30, 790,109.59 and 317,876.50 is: 438,683.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,525.30 : 790,109.59 = 317,876.50 : x
  2. Step 2: Convert to fraction form
    572,525.30/790,109.59 = 317,876.50/x
  3. Step 3: Cross multiply
    572,525.30x = 790,109.59 × 317,876.50
  4. Step 4: Simplify right side
    572,525.30x = 251,157,271,085.64
  5. Step 5: Solve for x
    x = 251,157,271,085.64/572,525.30
  6. Step 6: Final answer
    x = 438,683.27

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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.