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Finding the Fourth Proportional to 816,891.90, 1,127,294.81 and 454,307.95

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Solution

The fourth proportional to 816,891.90, 1,127,294.81 and 454,307.95 is: 626,936.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,891.90 : 1,127,294.81 = 454,307.95 : x
  2. Step 2: Convert to fraction form
    816,891.90/1,127,294.81 = 454,307.95/x
  3. Step 3: Cross multiply
    816,891.90x = 1,127,294.81 × 454,307.95
  4. Step 4: Simplify right side
    816,891.90x = 512,138,995,964.38
  5. Step 5: Solve for x
    x = 512,138,995,964.38/816,891.90
  6. Step 6: Final answer
    x = 626,936.07

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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.