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Finding the Fourth Proportional to 153,916.61, 230,888.07 and 54,068.11

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Solution

The fourth proportional to 153,916.61, 230,888.07 and 54,068.11 is: 81,106.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,916.61 : 230,888.07 = 54,068.11 : x
  2. Step 2: Convert to fraction form
    153,916.61/230,888.07 = 54,068.11/x
  3. Step 3: Cross multiply
    153,916.61x = 230,888.07 × 54,068.11
  4. Step 4: Simplify right side
    153,916.61x = 12,483,680,989.23
  5. Step 5: Solve for x
    x = 12,483,680,989.23/153,916.61
  6. Step 6: Final answer
    x = 81,106.78

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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.