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Finding the Fourth Proportional to 386,534.50, 533,475.93 and 235,718.98

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Solution

The fourth proportional to 386,534.50, 533,475.93 and 235,718.98 is: 325,327.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,534.50 : 533,475.93 = 235,718.98 : x
  2. Step 2: Convert to fraction form
    386,534.50/533,475.93 = 235,718.98/x
  3. Step 3: Cross multiply
    386,534.50x = 533,475.93 × 235,718.98
  4. Step 4: Simplify right side
    386,534.50x = 125,750,402,074.15
  5. Step 5: Solve for x
    x = 125,750,402,074.15/386,534.50
  6. Step 6: Final answer
    x = 325,327.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.