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Finding the Fourth Proportional to 608,645.23, 839,779.51 and 393,526.44

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Solution

The fourth proportional to 608,645.23, 839,779.51 and 393,526.44 is: 542,968.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,645.23 : 839,779.51 = 393,526.44 : x
  2. Step 2: Convert to fraction form
    608,645.23/839,779.51 = 393,526.44/x
  3. Step 3: Cross multiply
    608,645.23x = 839,779.51 × 393,526.44
  4. Step 4: Simplify right side
    608,645.23x = 330,475,438,987.61
  5. Step 5: Solve for x
    x = 330,475,438,987.61/608,645.23
  6. Step 6: Final answer
    x = 542,968.92

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Double scale
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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.