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Finding the Fourth Proportional to 292,646.91, 438,631.52 and 134,543.55

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Solution

The fourth proportional to 292,646.91, 438,631.52 and 134,543.55 is: 201,659.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,646.91 : 438,631.52 = 134,543.55 : x
  2. Step 2: Convert to fraction form
    292,646.91/438,631.52 = 134,543.55/x
  3. Step 3: Cross multiply
    292,646.91x = 438,631.52 × 134,543.55
  4. Step 4: Simplify right side
    292,646.91x = 59,015,041,169.98
  5. Step 5: Solve for x
    x = 59,015,041,169.98/292,646.91
  6. Step 6: Final answer
    x = 201,659.54

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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.