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Finding the Fourth Proportional to 528,611.10, 792,989.55 and 191,570.10

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Solution

The fourth proportional to 528,611.10, 792,989.55 and 191,570.10 is: 287,381.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,611.10 : 792,989.55 = 191,570.10 : x
  2. Step 2: Convert to fraction form
    528,611.10/792,989.55 = 191,570.10/x
  3. Step 3: Cross multiply
    528,611.10x = 792,989.55 × 191,570.10
  4. Step 4: Simplify right side
    528,611.10x = 151,913,087,392.46
  5. Step 5: Solve for x
    x = 151,913,087,392.46/528,611.10
  6. Step 6: Final answer
    x = 287,381.57

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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.