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Finding the Fourth Proportional to 154,010.86, 212,535.72 and 86,030.70

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Solution

The fourth proportional to 154,010.86, 212,535.72 and 86,030.70 is: 118,722.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,010.86 : 212,535.72 = 86,030.70 : x
  2. Step 2: Convert to fraction form
    154,010.86/212,535.72 = 86,030.70/x
  3. Step 3: Cross multiply
    154,010.86x = 212,535.72 × 86,030.70
  4. Step 4: Simplify right side
    154,010.86x = 18,284,596,292.21
  5. Step 5: Solve for x
    x = 18,284,596,292.21/154,010.86
  6. Step 6: Final answer
    x = 118,722.77

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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.