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Finding the Fourth Proportional to 1,036,713.65, 1,555,070.48 and 977,664.65

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Solution

The fourth proportional to 1,036,713.65, 1,555,070.48 and 977,664.65 is: 1,466,496.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036,713.65 : 1,555,070.48 = 977,664.65 : x
  2. Step 2: Convert to fraction form
    1,036,713.65/1,555,070.48 = 977,664.65/x
  3. Step 3: Cross multiply
    1,036,713.65x = 1,555,070.48 × 977,664.65
  4. Step 4: Simplify right side
    1,036,713.65x = 1,520,337,436,554.53
  5. Step 5: Solve for x
    x = 1,520,337,436,554.53/1,036,713.65
  6. Step 6: Final answer
    x = 1,466,496.98

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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.