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Finding the Fourth Proportional to 553,907.20, 829,111.20 and 434,934.40

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Solution

The fourth proportional to 553,907.20, 829,111.20 and 434,934.40 is: 651,027.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,907.20 : 829,111.20 = 434,934.40 : x
  2. Step 2: Convert to fraction form
    553,907.20/829,111.20 = 434,934.40/x
  3. Step 3: Cross multiply
    553,907.20x = 829,111.20 × 434,934.40
  4. Step 4: Simplify right side
    553,907.20x = 360,608,982,305.28
  5. Step 5: Solve for x
    x = 360,608,982,305.28/553,907.20
  6. Step 6: Final answer
    x = 651,027.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.