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Finding the Fourth Proportional to 642,526.36, 886,675.98 and 356,045.56

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Solution

The fourth proportional to 642,526.36, 886,675.98 and 356,045.56 is: 491,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,526.36 : 886,675.98 = 356,045.56 : x
  2. Step 2: Convert to fraction form
    642,526.36/886,675.98 = 356,045.56/x
  3. Step 3: Cross multiply
    642,526.36x = 886,675.98 × 356,045.56
  4. Step 4: Simplify right side
    642,526.36x = 315,697,045,837.65
  5. Step 5: Solve for x
    x = 315,697,045,837.65/642,526.36
  6. Step 6: Final answer
    x = 491,337.11

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1.5x scale

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.