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Finding the Fourth Proportional to 515,186.50, 710,715.45 and 364,366.66

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Solution

The fourth proportional to 515,186.50, 710,715.45 and 364,366.66 is: 502,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,186.50 : 710,715.45 = 364,366.66 : x
  2. Step 2: Convert to fraction form
    515,186.50/710,715.45 = 364,366.66/x
  3. Step 3: Cross multiply
    515,186.50x = 710,715.45 × 364,366.66
  4. Step 4: Simplify right side
    515,186.50x = 258,961,014,726.90
  5. Step 5: Solve for x
    x = 258,961,014,726.90/515,186.50
  6. Step 6: Final answer
    x = 502,654.89

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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.