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Finding the Fourth Proportional to 261,017.68, 391,555.16 and 83,482.96

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Solution

The fourth proportional to 261,017.68, 391,555.16 and 83,482.96 is: 125,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,017.68 : 391,555.16 = 83,482.96 : x
  2. Step 2: Convert to fraction form
    261,017.68/391,555.16 = 83,482.96/x
  3. Step 3: Cross multiply
    261,017.68x = 391,555.16 × 83,482.96
  4. Step 4: Simplify right side
    261,017.68x = 32,688,183,760.07
  5. Step 5: Solve for x
    x = 32,688,183,760.07/261,017.68
  6. Step 6: Final answer
    x = 125,233.60

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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.