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Finding the Fourth Proportional to 109,655.05, 164,482.58 and 83,411.05

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Solution

The fourth proportional to 109,655.05, 164,482.58 and 83,411.05 is: 125,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,655.05 : 164,482.58 = 83,411.05 : x
  2. Step 2: Convert to fraction form
    109,655.05/164,482.58 = 83,411.05/x
  3. Step 3: Cross multiply
    109,655.05x = 164,482.58 × 83,411.05
  4. Step 4: Simplify right side
    109,655.05x = 13,719,664,287.45
  5. Step 5: Solve for x
    x = 13,719,664,287.45/109,655.05
  6. Step 6: Final answer
    x = 125,116.58

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1.5x scale

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.