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Finding the Fourth Proportional to 384,668.15, 530,915.39 and 253,615.69

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Solution

The fourth proportional to 384,668.15, 530,915.39 and 253,615.69 is: 350,038.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,668.15 : 530,915.39 = 253,615.69 : x
  2. Step 2: Convert to fraction form
    384,668.15/530,915.39 = 253,615.69/x
  3. Step 3: Cross multiply
    384,668.15x = 530,915.39 × 253,615.69
  4. Step 4: Simplify right side
    384,668.15x = 134,648,472,966.47
  5. Step 5: Solve for x
    x = 134,648,472,966.47/384,668.15
  6. Step 6: Final answer
    x = 350,038.01

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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.