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Finding the Fourth Proportional to 884,328.64, 1,326,773.32 and 315,697.40

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Solution

The fourth proportional to 884,328.64, 1,326,773.32 and 315,697.40 is: 473,646.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,328.64 : 1,326,773.32 = 315,697.40 : x
  2. Step 2: Convert to fraction form
    884,328.64/1,326,773.32 = 315,697.40/x
  3. Step 3: Cross multiply
    884,328.64x = 1,326,773.32 × 315,697.40
  4. Step 4: Simplify right side
    884,328.64x = 418,858,885,065.66
  5. Step 5: Solve for x
    x = 418,858,885,065.66/884,328.64
  6. Step 6: Final answer
    x = 473,646.18

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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.