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Finding the Fourth Proportional to 526,903.72, 790,357.61 and 127,543.84

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Solution

The fourth proportional to 526,903.72, 790,357.61 and 127,543.84 is: 191,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,903.72 : 790,357.61 = 127,543.84 : x
  2. Step 2: Convert to fraction form
    526,903.72/790,357.61 = 127,543.84/x
  3. Step 3: Cross multiply
    526,903.72x = 790,357.61 × 127,543.84
  4. Step 4: Simplify right side
    526,903.72x = 100,805,242,895.59
  5. Step 5: Solve for x
    x = 100,805,242,895.59/526,903.72
  6. Step 6: Final answer
    x = 191,316.25

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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.