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Finding the Fourth Proportional to 356,685.69, 492,246.33 and 211,577.52

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Solution

The fourth proportional to 356,685.69, 492,246.33 and 211,577.52 is: 291,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,685.69 : 492,246.33 = 211,577.52 : x
  2. Step 2: Convert to fraction form
    356,685.69/492,246.33 = 211,577.52/x
  3. Step 3: Cross multiply
    356,685.69x = 492,246.33 × 211,577.52
  4. Step 4: Simplify right side
    356,685.69x = 104,148,257,730.50
  5. Step 5: Solve for x
    x = 104,148,257,730.50/356,685.69
  6. Step 6: Final answer
    x = 291,988.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.