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Finding the Fourth Proportional to 156,088.87, 215,402.63 and 84,468.88

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Solution

The fourth proportional to 156,088.87, 215,402.63 and 84,468.88 is: 116,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,088.87 : 215,402.63 = 84,468.88 : x
  2. Step 2: Convert to fraction form
    156,088.87/215,402.63 = 84,468.88/x
  3. Step 3: Cross multiply
    156,088.87x = 215,402.63 × 84,468.88
  4. Step 4: Simplify right side
    156,088.87x = 18,194,818,482.81
  5. Step 5: Solve for x
    x = 18,194,818,482.81/156,088.87
  6. Step 6: Final answer
    x = 116,567.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.