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Finding the Fourth Proportional to 688,969.49, 950,809.54 and 383,077.28

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Solution

The fourth proportional to 688,969.49, 950,809.54 and 383,077.28 is: 528,664.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,969.49 : 950,809.54 = 383,077.28 : x
  2. Step 2: Convert to fraction form
    688,969.49/950,809.54 = 383,077.28/x
  3. Step 3: Cross multiply
    688,969.49x = 950,809.54 × 383,077.28
  4. Step 4: Simplify right side
    688,969.49x = 364,233,527,627.20
  5. Step 5: Solve for x
    x = 364,233,527,627.20/688,969.49
  6. Step 6: Final answer
    x = 528,664.23

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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.