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Finding the Fourth Proportional to 191,184.64, 286,776.94 and 91,041.21

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Solution

The fourth proportional to 191,184.64, 286,776.94 and 91,041.21 is: 136,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,184.64 : 286,776.94 = 91,041.21 : x
  2. Step 2: Convert to fraction form
    191,184.64/286,776.94 = 91,041.21/x
  3. Step 3: Cross multiply
    191,184.64x = 286,776.94 × 91,041.21
  4. Step 4: Simplify right side
    191,184.64x = 26,108,517,728.61
  5. Step 5: Solve for x
    x = 26,108,517,728.61/191,184.64
  6. Step 6: Final answer
    x = 136,561.80

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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.