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Finding the Fourth Proportional to 98,788.60, 136,354.62 and 61,041.52

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Solution

The fourth proportional to 98,788.60, 136,354.62 and 61,041.52 is: 84,253.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,788.60 : 136,354.62 = 61,041.52 : x
  2. Step 2: Convert to fraction form
    98,788.60/136,354.62 = 61,041.52/x
  3. Step 3: Cross multiply
    98,788.60x = 136,354.62 × 61,041.52
  4. Step 4: Simplify right side
    98,788.60x = 8,323,293,263.82
  5. Step 5: Solve for x
    x = 8,323,293,263.82/98,788.60
  6. Step 6: Final answer
    x = 84,253.58

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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.