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Finding the Fourth Proportional to 503,309.22, 754,730.55 and 187,681.38

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Solution

The fourth proportional to 503,309.22, 754,730.55 and 187,681.38 is: 281,435.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,309.22 : 754,730.55 = 187,681.38 : x
  2. Step 2: Convert to fraction form
    503,309.22/754,730.55 = 187,681.38/x
  3. Step 3: Cross multiply
    503,309.22x = 754,730.55 × 187,681.38
  4. Step 4: Simplify right side
    503,309.22x = 141,648,871,152.16
  5. Step 5: Solve for x
    x = 141,648,871,152.16/503,309.22
  6. Step 6: Final answer
    x = 281,435.08

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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.