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Finding the Fourth Proportional to 656,666.07, 906,160.12 and 381,002.57

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Solution

The fourth proportional to 656,666.07, 906,160.12 and 381,002.57 is: 525,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,666.07 : 906,160.12 = 381,002.57 : x
  2. Step 2: Convert to fraction form
    656,666.07/906,160.12 = 381,002.57/x
  3. Step 3: Cross multiply
    656,666.07x = 906,160.12 × 381,002.57
  4. Step 4: Simplify right side
    656,666.07x = 345,249,332,466.30
  5. Step 5: Solve for x
    x = 345,249,332,466.30/656,666.07
  6. Step 6: Final answer
    x = 525,760.89

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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.