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Finding the Fourth Proportional to 157,044.32, 216,605.14 and 99,634.19

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Solution

The fourth proportional to 157,044.32, 216,605.14 and 99,634.19 is: 137,421.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,044.32 : 216,605.14 = 99,634.19 : x
  2. Step 2: Convert to fraction form
    157,044.32/216,605.14 = 99,634.19/x
  3. Step 3: Cross multiply
    157,044.32x = 216,605.14 × 99,634.19
  4. Step 4: Simplify right side
    157,044.32x = 21,581,276,341.63
  5. Step 5: Solve for x
    x = 21,581,276,341.63/157,044.32
  6. Step 6: Final answer
    x = 137,421.57

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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.