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Finding the Fourth Proportional to 668,707.20, 922,800.60 and 382,210.20

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Solution

The fourth proportional to 668,707.20, 922,800.60 and 382,210.20 is: 527,441.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,707.20 : 922,800.60 = 382,210.20 : x
  2. Step 2: Convert to fraction form
    668,707.20/922,800.60 = 382,210.20/x
  3. Step 3: Cross multiply
    668,707.20x = 922,800.60 × 382,210.20
  4. Step 4: Simplify right side
    668,707.20x = 352,703,801,886.12
  5. Step 5: Solve for x
    x = 352,703,801,886.12/668,707.20
  6. Step 6: Final answer
    x = 527,441.31

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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.