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Finding the Fourth Proportional to 261,005.60, 391,566.63 and 83,523.26

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Solution

The fourth proportional to 261,005.60, 391,566.63 and 83,523.26 is: 125,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,005.60 : 391,566.63 = 83,523.26 : x
  2. Step 2: Convert to fraction form
    261,005.60/391,566.63 = 83,523.26/x
  3. Step 3: Cross multiply
    261,005.60x = 391,566.63 × 83,523.26
  4. Step 4: Simplify right side
    261,005.60x = 32,704,921,444.81
  5. Step 5: Solve for x
    x = 32,704,921,444.81/261,005.60
  6. Step 6: Final answer
    x = 125,303.52

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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.