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Finding the Fourth Proportional to 516,700.86, 773,595.47 and 389,938.25

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Solution

The fourth proportional to 516,700.86, 773,595.47 and 389,938.25 is: 583,808.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,700.86 : 773,595.47 = 389,938.25 : x
  2. Step 2: Convert to fraction form
    516,700.86/773,595.47 = 389,938.25/x
  3. Step 3: Cross multiply
    516,700.86x = 773,595.47 × 389,938.25
  4. Step 4: Simplify right side
    516,700.86x = 301,654,457,962.06
  5. Step 5: Solve for x
    x = 301,654,457,962.06/516,700.86
  6. Step 6: Final answer
    x = 583,808.70

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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.