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Finding the Fourth Proportional to 697,071.98, 961,959.83 and 391,106.14

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Solution

The fourth proportional to 697,071.98, 961,959.83 and 391,106.14 is: 539,726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,071.98 : 961,959.83 = 391,106.14 : x
  2. Step 2: Convert to fraction form
    697,071.98/961,959.83 = 391,106.14/x
  3. Step 3: Cross multiply
    697,071.98x = 961,959.83 × 391,106.14
  4. Step 4: Simplify right side
    697,071.98x = 376,228,395,946.36
  5. Step 5: Solve for x
    x = 376,228,395,946.36/697,071.98
  6. Step 6: Final answer
    x = 539,726.75

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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.