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Finding the Fourth Proportional to 191,157.48, 286,770.70 and 78,775.15

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Solution

The fourth proportional to 191,157.48, 286,770.70 and 78,775.15 is: 118,176.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,157.48 : 286,770.70 = 78,775.15 : x
  2. Step 2: Convert to fraction form
    191,157.48/286,770.70 = 78,775.15/x
  3. Step 3: Cross multiply
    191,157.48x = 286,770.70 × 78,775.15
  4. Step 4: Simplify right side
    191,157.48x = 22,590,404,908.11
  5. Step 5: Solve for x
    x = 22,590,404,908.11/191,157.48
  6. Step 6: Final answer
    x = 118,176.93

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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.