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Finding the Fourth Proportional to 1,213,368, 1,674,447.84 and 676,824

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Solution

The fourth proportional to 1,213,368, 1,674,447.84 and 676,824 is: 934,017.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,368 : 1,674,447.84 = 676,824 : x
  2. Step 2: Convert to fraction form
    1,213,368/1,674,447.84 = 676,824/x
  3. Step 3: Cross multiply
    1,213,368x = 1,674,447.84 × 676,824
  4. Step 4: Simplify right side
    1,213,368x = 1,133,306,484,860.16
  5. Step 5: Solve for x
    x = 1,133,306,484,860.16/1,213,368
  6. Step 6: Final answer
    x = 934,017.12

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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.