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Finding the Fourth Proportional to 656,440.58, 906,190.67 and 384,470.93

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Solution

The fourth proportional to 656,440.58, 906,190.67 and 384,470.93 is: 530,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,440.58 : 906,190.67 = 384,470.93 : x
  2. Step 2: Convert to fraction form
    656,440.58/906,190.67 = 384,470.93/x
  3. Step 3: Cross multiply
    656,440.58x = 906,190.67 × 384,470.93
  4. Step 4: Simplify right side
    656,440.58x = 348,403,969,652.22
  5. Step 5: Solve for x
    x = 348,403,969,652.22/656,440.58
  6. Step 6: Final answer
    x = 530,747.15

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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.