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Finding the Fourth Proportional to 345,977.80, 518,966.70 and 188,513.80

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Solution

The fourth proportional to 345,977.80, 518,966.70 and 188,513.80 is: 282,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,977.80 : 518,966.70 = 188,513.80 : x
  2. Step 2: Convert to fraction form
    345,977.80/518,966.70 = 188,513.80/x
  3. Step 3: Cross multiply
    345,977.80x = 518,966.70 × 188,513.80
  4. Step 4: Simplify right side
    345,977.80x = 97,832,384,690.46
  5. Step 5: Solve for x
    x = 97,832,384,690.46/345,977.80
  6. Step 6: Final answer
    x = 282,770.70

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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.