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Finding the Fourth Proportional to 121,607.19, 182,258.51 and 65,308.95

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Solution

The fourth proportional to 121,607.19, 182,258.51 and 65,308.95 is: 97,881.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,607.19 : 182,258.51 = 65,308.95 : x
  2. Step 2: Convert to fraction form
    121,607.19/182,258.51 = 65,308.95/x
  3. Step 3: Cross multiply
    121,607.19x = 182,258.51 × 65,308.95
  4. Step 4: Simplify right side
    121,607.19x = 11,903,111,590.12
  5. Step 5: Solve for x
    x = 11,903,111,590.12/121,607.19
  6. Step 6: Final answer
    x = 97,881.64

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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.