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Finding the Fourth Proportional to 443,707.55, 612,365.07 and 257,480.04

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Solution

The fourth proportional to 443,707.55, 612,365.07 and 257,480.04 is: 355,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,707.55 : 612,365.07 = 257,480.04 : x
  2. Step 2: Convert to fraction form
    443,707.55/612,365.07 = 257,480.04/x
  3. Step 3: Cross multiply
    443,707.55x = 612,365.07 × 257,480.04
  4. Step 4: Simplify right side
    443,707.55x = 157,671,782,535.57
  5. Step 5: Solve for x
    x = 157,671,782,535.57/443,707.55
  6. Step 6: Final answer
    x = 355,350.68

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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.