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Finding the Fourth Proportional to 509,314.60, 763,413.90 and 256,191.40

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Solution

The fourth proportional to 509,314.60, 763,413.90 and 256,191.40 is: 384,006.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,314.60 : 763,413.90 = 256,191.40 : x
  2. Step 2: Convert to fraction form
    509,314.60/763,413.90 = 256,191.40/x
  3. Step 3: Cross multiply
    509,314.60x = 763,413.90 × 256,191.40
  4. Step 4: Simplify right side
    509,314.60x = 195,580,075,820.46
  5. Step 5: Solve for x
    x = 195,580,075,820.46/509,314.60
  6. Step 6: Final answer
    x = 384,006.42

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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.