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Finding the Fourth Proportional to 154,009.01, 212,526.08 and 86,025.66

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Solution

The fourth proportional to 154,009.01, 212,526.08 and 86,025.66 is: 118,711.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,009.01 : 212,526.08 = 86,025.66 : x
  2. Step 2: Convert to fraction form
    154,009.01/212,526.08 = 86,025.66/x
  3. Step 3: Cross multiply
    154,009.01x = 212,526.08 × 86,025.66
  4. Step 4: Simplify right side
    154,009.01x = 18,282,696,299.21
  5. Step 5: Solve for x
    x = 18,282,696,299.21/154,009.01
  6. Step 6: Final answer
    x = 118,711.86

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1.5x scale

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.