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Finding the Fourth Proportional to 891,626.11, 1,230,443.88 and 509,661.09

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Solution

The fourth proportional to 891,626.11, 1,230,443.88 and 509,661.09 is: 703,332.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,626.11 : 1,230,443.88 = 509,661.09 : x
  2. Step 2: Convert to fraction form
    891,626.11/1,230,443.88 = 509,661.09/x
  3. Step 3: Cross multiply
    891,626.11x = 1,230,443.88 × 509,661.09
  4. Step 4: Simplify right side
    891,626.11x = 627,109,369,064.63
  5. Step 5: Solve for x
    x = 627,109,369,064.63/891,626.11
  6. Step 6: Final answer
    x = 703,332.22

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Double scale
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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.