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Finding the Fourth Proportional to 713,567.78, 1,070,530.14 and 503,615.78

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Solution

The fourth proportional to 713,567.78, 1,070,530.14 and 503,615.78 is: 755,549.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,567.78 : 1,070,530.14 = 503,615.78 : x
  2. Step 2: Convert to fraction form
    713,567.78/1,070,530.14 = 503,615.78/x
  3. Step 3: Cross multiply
    713,567.78x = 1,070,530.14 × 503,615.78
  4. Step 4: Simplify right side
    713,567.78x = 539,135,871,469.61
  5. Step 5: Solve for x
    x = 539,135,871,469.61/713,567.78
  6. Step 6: Final answer
    x = 755,549.63

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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.