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Finding the Fourth Proportional to 553,516.66, 830,275.80 and 154,158.58

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Solution

The fourth proportional to 553,516.66, 830,275.80 and 154,158.58 is: 231,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,516.66 : 830,275.80 = 154,158.58 : x
  2. Step 2: Convert to fraction form
    553,516.66/830,275.80 = 154,158.58/x
  3. Step 3: Cross multiply
    553,516.66x = 830,275.80 × 154,158.58
  4. Step 4: Simplify right side
    553,516.66x = 127,994,138,336.36
  5. Step 5: Solve for x
    x = 127,994,138,336.36/553,516.66
  6. Step 6: Final answer
    x = 231,238.10

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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.