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Finding the Fourth Proportional to 316,891.67, 475,332.99 and 77,007.33

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Solution

The fourth proportional to 316,891.67, 475,332.99 and 77,007.33 is: 115,509.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,891.67 : 475,332.99 = 77,007.33 : x
  2. Step 2: Convert to fraction form
    316,891.67/475,332.99 = 77,007.33/x
  3. Step 3: Cross multiply
    316,891.67x = 475,332.99 × 77,007.33
  4. Step 4: Simplify right side
    316,891.67x = 36,604,124,420.82
  5. Step 5: Solve for x
    x = 36,604,124,420.82/316,891.67
  6. Step 6: Final answer
    x = 115,509.90

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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.