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Finding the Fourth Proportional to 1,055,820.89, 1,583,730.99 and 913,242.17

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Solution

The fourth proportional to 1,055,820.89, 1,583,730.99 and 913,242.17 is: 1,369,862.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055,820.89 : 1,583,730.99 = 913,242.17 : x
  2. Step 2: Convert to fraction form
    1,055,820.89/1,583,730.99 = 913,242.17/x
  3. Step 3: Cross multiply
    1,055,820.89x = 1,583,730.99 × 913,242.17
  4. Step 4: Simplify right side
    1,055,820.89x = 1,446,329,929,963.18
  5. Step 5: Solve for x
    x = 1,446,329,929,963.18/1,055,820.89
  6. Step 6: Final answer
    x = 1,369,862.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.