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Finding the Fourth Proportional to 112,354.70, 155,111.76 and 76,597.25

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Solution

The fourth proportional to 112,354.70, 155,111.76 and 76,597.25 is: 105,746.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,354.70 : 155,111.76 = 76,597.25 : x
  2. Step 2: Convert to fraction form
    112,354.70/155,111.76 = 76,597.25/x
  3. Step 3: Cross multiply
    112,354.70x = 155,111.76 × 76,597.25
  4. Step 4: Simplify right side
    112,354.70x = 11,881,133,483.10
  5. Step 5: Solve for x
    x = 11,881,133,483.10/112,354.70
  6. Step 6: Final answer
    x = 105,746.66

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