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Finding the Fourth Proportional to 710,655.20, 1,064,233.20 and 472,709.60

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Solution

The fourth proportional to 710,655.20, 1,064,233.20 and 472,709.60 is: 707,900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,655.20 : 1,064,233.20 = 472,709.60 : x
  2. Step 2: Convert to fraction form
    710,655.20/1,064,233.20 = 472,709.60/x
  3. Step 3: Cross multiply
    710,655.20x = 1,064,233.20 × 472,709.60
  4. Step 4: Simplify right side
    710,655.20x = 503,073,250,278.72
  5. Step 5: Solve for x
    x = 503,073,250,278.72/710,655.20
  6. Step 6: Final answer
    x = 707,900.61

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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.