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Finding the Fourth Proportional to 514,903.30, 772,342.80 and 140,926.30

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Solution

The fourth proportional to 514,903.30, 772,342.80 and 140,926.30 is: 211,386.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,903.30 : 772,342.80 = 140,926.30 : x
  2. Step 2: Convert to fraction form
    514,903.30/772,342.80 = 140,926.30/x
  3. Step 3: Cross multiply
    514,903.30x = 772,342.80 × 140,926.30
  4. Step 4: Simplify right side
    514,903.30x = 108,843,413,135.64
  5. Step 5: Solve for x
    x = 108,843,413,135.64/514,903.30
  6. Step 6: Final answer
    x = 211,386.12

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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.