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Finding the Fourth Proportional to 112,503.74, 168,706.40 and 53,356.32

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Solution

The fourth proportional to 112,503.74, 168,706.40 and 53,356.32 is: 80,011.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,503.74 : 168,706.40 = 53,356.32 : x
  2. Step 2: Convert to fraction form
    112,503.74/168,706.40 = 53,356.32/x
  3. Step 3: Cross multiply
    112,503.74x = 168,706.40 × 53,356.32
  4. Step 4: Simplify right side
    112,503.74x = 9,001,552,397.67
  5. Step 5: Solve for x
    x = 9,001,552,397.67/112,503.74
  6. Step 6: Final answer
    x = 80,011.14

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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.