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Finding the Fourth Proportional to 156,802.82, 216,389.40 and 85,184.24

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Solution

The fourth proportional to 156,802.82, 216,389.40 and 85,184.24 is: 117,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,802.82 : 216,389.40 = 85,184.24 : x
  2. Step 2: Convert to fraction form
    156,802.82/216,389.40 = 85,184.24/x
  3. Step 3: Cross multiply
    156,802.82x = 216,389.40 × 85,184.24
  4. Step 4: Simplify right side
    156,802.82x = 18,432,966,583.06
  5. Step 5: Solve for x
    x = 18,432,966,583.06/156,802.82
  6. Step 6: Final answer
    x = 117,555.07

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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.