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Finding the Fourth Proportional to 72,157.76, 99,543.84 and 46,998.08

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Solution

The fourth proportional to 72,157.76, 99,543.84 and 46,998.08 is: 64,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,157.76 : 99,543.84 = 46,998.08 : x
  2. Step 2: Convert to fraction form
    72,157.76/99,543.84 = 46,998.08/x
  3. Step 3: Cross multiply
    72,157.76x = 99,543.84 × 46,998.08
  4. Step 4: Simplify right side
    72,157.76x = 4,678,369,355.83
  5. Step 5: Solve for x
    x = 4,678,369,355.83/72,157.76
  6. Step 6: Final answer
    x = 64,835.29

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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.