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Finding the Fourth Proportional to 72,437.76, 108,598.14 and 28,041.84

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Solution

The fourth proportional to 72,437.76, 108,598.14 and 28,041.84 is: 42,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,437.76 : 108,598.14 = 28,041.84 : x
  2. Step 2: Convert to fraction form
    72,437.76/108,598.14 = 28,041.84/x
  3. Step 3: Cross multiply
    72,437.76x = 108,598.14 × 28,041.84
  4. Step 4: Simplify right side
    72,437.76x = 3,045,291,666.18
  5. Step 5: Solve for x
    x = 3,045,291,666.18/72,437.76
  6. Step 6: Final answer
    x = 42,040.11

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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.