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Finding the Fourth Proportional to 656,388.80, 905,828.16 and 384,652.16

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Solution

The fourth proportional to 656,388.80, 905,828.16 and 384,652.16 is: 530,826.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,388.80 : 905,828.16 = 384,652.16 : x
  2. Step 2: Convert to fraction form
    656,388.80/905,828.16 = 384,652.16/x
  3. Step 3: Cross multiply
    656,388.80x = 905,828.16 × 384,652.16
  4. Step 4: Simplify right side
    656,388.80x = 348,428,758,332.83
  5. Step 5: Solve for x
    x = 348,428,758,332.83/656,388.80
  6. Step 6: Final answer
    x = 530,826.79

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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.