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Finding the Fourth Proportional to 99,154.61, 148,605.55 and 46,447.91

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Solution

The fourth proportional to 99,154.61, 148,605.55 and 46,447.91 is: 69,612.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,154.61 : 148,605.55 = 46,447.91 : x
  2. Step 2: Convert to fraction form
    99,154.61/148,605.55 = 46,447.91/x
  3. Step 3: Cross multiply
    99,154.61x = 148,605.55 × 46,447.91
  4. Step 4: Simplify right side
    99,154.61x = 6,902,416,352.75
  5. Step 5: Solve for x
    x = 6,902,416,352.75/99,154.61
  6. Step 6: Final answer
    x = 69,612.67

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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.