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Finding the Fourth Proportional to 570,348.23, 786,167.78 and 386,530.88

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Solution

The fourth proportional to 570,348.23, 786,167.78 and 386,530.88 is: 532,794.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,348.23 : 786,167.78 = 386,530.88 : x
  2. Step 2: Convert to fraction form
    570,348.23/786,167.78 = 386,530.88/x
  3. Step 3: Cross multiply
    570,348.23x = 786,167.78 × 386,530.88
  4. Step 4: Simplify right side
    570,348.23x = 303,878,117,967.55
  5. Step 5: Solve for x
    x = 303,878,117,967.55/570,348.23
  6. Step 6: Final answer
    x = 532,794.01

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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.