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Finding the Fourth Proportional to 86,312.68, 119,043.30 and 56,498.92

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Solution

The fourth proportional to 86,312.68, 119,043.30 and 56,498.92 is: 77,923.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,312.68 : 119,043.30 = 56,498.92 : x
  2. Step 2: Convert to fraction form
    86,312.68/119,043.30 = 56,498.92/x
  3. Step 3: Cross multiply
    86,312.68x = 119,043.30 × 56,498.92
  4. Step 4: Simplify right side
    86,312.68x = 6,725,817,883.24
  5. Step 5: Solve for x
    x = 6,725,817,883.24/86,312.68
  6. Step 6: Final answer
    x = 77,923.87

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1.5x scale

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.