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Finding the Fourth Proportional to 1,555,599, 2,146,728.06 and 840,207

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Solution

The fourth proportional to 1,555,599, 2,146,728.06 and 840,207 is: 1,159,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,599 : 2,146,728.06 = 840,207 : x
  2. Step 2: Convert to fraction form
    1,555,599/2,146,728.06 = 840,207/x
  3. Step 3: Cross multiply
    1,555,599x = 2,146,728.06 × 840,207
  4. Step 4: Simplify right side
    1,555,599x = 1,803,695,943,108.42
  5. Step 5: Solve for x
    x = 1,803,695,943,108.42/1,555,599
  6. Step 6: Final answer
    x = 1,159,486.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.