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Finding the Fourth Proportional to 472,283.81, 651,758.22 and 257,423.48

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Solution

The fourth proportional to 472,283.81, 651,758.22 and 257,423.48 is: 355,247.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,283.81 : 651,758.22 = 257,423.48 : x
  2. Step 2: Convert to fraction form
    472,283.81/651,758.22 = 257,423.48/x
  3. Step 3: Cross multiply
    472,283.81x = 651,758.22 × 257,423.48
  4. Step 4: Simplify right side
    472,283.81x = 167,777,865,852.22
  5. Step 5: Solve for x
    x = 167,777,865,852.22/472,283.81
  6. Step 6: Final answer
    x = 355,247.98

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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.