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Finding the Fourth Proportional to 526,309.92, 789,663.12 and 316,094.40

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Solution

The fourth proportional to 526,309.92, 789,663.12 and 316,094.40 is: 474,260.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,309.92 : 789,663.12 = 316,094.40 : x
  2. Step 2: Convert to fraction form
    526,309.92/789,663.12 = 316,094.40/x
  3. Step 3: Cross multiply
    526,309.92x = 789,663.12 × 316,094.40
  4. Step 4: Simplify right side
    526,309.92x = 249,608,090,118.53
  5. Step 5: Solve for x
    x = 249,608,090,118.53/526,309.92
  6. Step 6: Final answer
    x = 474,260.66

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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.