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Finding the Fourth Proportional to 191,199.12, 286,798.68 and 91,055.72

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Solution

The fourth proportional to 191,199.12, 286,798.68 and 91,055.72 is: 136,583.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,199.12 : 286,798.68 = 91,055.72 : x
  2. Step 2: Convert to fraction form
    191,199.12/286,798.68 = 91,055.72/x
  3. Step 3: Cross multiply
    191,199.12x = 286,798.68 × 91,055.72
  4. Step 4: Simplify right side
    191,199.12x = 26,114,660,302.45
  5. Step 5: Solve for x
    x = 26,114,660,302.45/191,199.12
  6. Step 6: Final answer
    x = 136,583.58

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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.