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Finding the Fourth Proportional to 406,943.70, 610,415.55 and 185,759.70

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Solution

The fourth proportional to 406,943.70, 610,415.55 and 185,759.70 is: 278,639.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,943.70 : 610,415.55 = 185,759.70 : x
  2. Step 2: Convert to fraction form
    406,943.70/610,415.55 = 185,759.70/x
  3. Step 3: Cross multiply
    406,943.70x = 610,415.55 × 185,759.70
  4. Step 4: Simplify right side
    406,943.70x = 113,390,609,443.34
  5. Step 5: Solve for x
    x = 113,390,609,443.34/406,943.70
  6. Step 6: Final answer
    x = 278,639.55

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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.