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Finding the Fourth Proportional to 553,861.68, 830,799.18 and 154,478.13

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Solution

The fourth proportional to 553,861.68, 830,799.18 and 154,478.13 is: 231,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,861.68 : 830,799.18 = 154,478.13 : x
  2. Step 2: Convert to fraction form
    553,861.68/830,799.18 = 154,478.13/x
  3. Step 3: Cross multiply
    553,861.68x = 830,799.18 × 154,478.13
  4. Step 4: Simplify right side
    553,861.68x = 128,340,303,731.93
  5. Step 5: Solve for x
    x = 128,340,303,731.93/553,861.68
  6. Step 6: Final answer
    x = 231,719.05

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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.