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Finding the Fourth Proportional to 1,051,699.80, 1,577,664.90 and 1,018,522.20

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Solution

The fourth proportional to 1,051,699.80, 1,577,664.90 and 1,018,522.20 is: 1,527,894.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051,699.80 : 1,577,664.90 = 1,018,522.20 : x
  2. Step 2: Convert to fraction form
    1,051,699.80/1,577,664.90 = 1,018,522.20/x
  3. Step 3: Cross multiply
    1,051,699.80x = 1,577,664.90 × 1,018,522.20
  4. Step 4: Simplify right side
    1,051,699.80x = 1,606,886,724,810.78
  5. Step 5: Solve for x
    x = 1,606,886,724,810.78/1,051,699.80
  6. Step 6: Final answer
    x = 1,527,894.87

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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.