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Finding the Fourth Proportional to 539,156.40, 808,734.60 and 258,529.20

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Solution

The fourth proportional to 539,156.40, 808,734.60 and 258,529.20 is: 387,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,156.40 : 808,734.60 = 258,529.20 : x
  2. Step 2: Convert to fraction form
    539,156.40/808,734.60 = 258,529.20/x
  3. Step 3: Cross multiply
    539,156.40x = 808,734.60 × 258,529.20
  4. Step 4: Simplify right side
    539,156.40x = 209,081,509,150.32
  5. Step 5: Solve for x
    x = 209,081,509,150.32/539,156.40
  6. Step 6: Final answer
    x = 387,793.80

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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.