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Finding the Fourth Proportional to 624,508.80, 861,852.60 and 382,804.80

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Solution

The fourth proportional to 624,508.80, 861,852.60 and 382,804.80 is: 528,289.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,508.80 : 861,852.60 = 382,804.80 : x
  2. Step 2: Convert to fraction form
    624,508.80/861,852.60 = 382,804.80/x
  3. Step 3: Cross multiply
    624,508.80x = 861,852.60 × 382,804.80
  4. Step 4: Simplify right side
    624,508.80x = 329,921,312,172.48
  5. Step 5: Solve for x
    x = 329,921,312,172.48/624,508.80
  6. Step 6: Final answer
    x = 528,289.29

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1.5x scale

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.