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Finding the Fourth Proportional to 697,341.71, 961,239.78 and 455,503.25

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Solution

The fourth proportional to 697,341.71, 961,239.78 and 455,503.25 is: 627,881.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,341.71 : 961,239.78 = 455,503.25 : x
  2. Step 2: Convert to fraction form
    697,341.71/961,239.78 = 455,503.25/x
  3. Step 3: Cross multiply
    697,341.71x = 961,239.78 × 455,503.25
  4. Step 4: Simplify right side
    697,341.71x = 437,847,839,013.09
  5. Step 5: Solve for x
    x = 437,847,839,013.09/697,341.71
  6. Step 6: Final answer
    x = 627,881.33

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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.