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Finding the Fourth Proportional to 530,275, 731,779.62 and 291,811

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Solution

The fourth proportional to 530,275, 731,779.62 and 291,811 is: 402,699.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,275 : 731,779.62 = 291,811 : x
  2. Step 2: Convert to fraction form
    530,275/731,779.62 = 291,811/x
  3. Step 3: Cross multiply
    530,275x = 731,779.62 × 291,811
  4. Step 4: Simplify right side
    530,275x = 213,541,342,691.82
  5. Step 5: Solve for x
    x = 213,541,342,691.82/530,275
  6. Step 6: Final answer
    x = 402,699.25

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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.