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Finding the Fourth Proportional to 98,750.40, 148,160.16 and 28,633.92

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Solution

The fourth proportional to 98,750.40, 148,160.16 and 28,633.92 is: 42,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,750.40 : 148,160.16 = 28,633.92 : x
  2. Step 2: Convert to fraction form
    98,750.40/148,160.16 = 28,633.92/x
  3. Step 3: Cross multiply
    98,750.40x = 148,160.16 × 28,633.92
  4. Step 4: Simplify right side
    98,750.40x = 4,242,406,168.63
  5. Step 5: Solve for x
    x = 4,242,406,168.63/98,750.40
  6. Step 6: Final answer
    x = 42,960.90

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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.