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Finding the Fourth Proportional to 157,095.50, 216,790.11 and 93,431.90

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Solution

The fourth proportional to 157,095.50, 216,790.11 and 93,431.90 is: 128,935.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,095.50 : 216,790.11 = 93,431.90 : x
  2. Step 2: Convert to fraction form
    157,095.50/216,790.11 = 93,431.90/x
  3. Step 3: Cross multiply
    157,095.50x = 216,790.11 × 93,431.90
  4. Step 4: Simplify right side
    157,095.50x = 20,255,111,878.51
  5. Step 5: Solve for x
    x = 20,255,111,878.51/157,095.50
  6. Step 6: Final answer
    x = 128,935.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.