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Finding the Fourth Proportional to 526,902.98, 790,356.29 and 127,543.11

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Solution

The fourth proportional to 526,902.98, 790,356.29 and 127,543.11 is: 191,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,902.98 : 790,356.29 = 127,543.11 : x
  2. Step 2: Convert to fraction form
    526,902.98/790,356.29 = 127,543.11/x
  3. Step 3: Cross multiply
    526,902.98x = 790,356.29 × 127,543.11
  4. Step 4: Simplify right side
    526,902.98x = 100,804,495,633.11
  5. Step 5: Solve for x
    x = 100,804,495,633.11/526,902.98
  6. Step 6: Final answer
    x = 191,315.10

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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.