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Finding the Fourth Proportional to 156,830.36, 216,429.36 and 93,168.32

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Solution

The fourth proportional to 156,830.36, 216,429.36 and 93,168.32 is: 128,574.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,830.36 : 216,429.36 = 93,168.32 : x
  2. Step 2: Convert to fraction form
    156,830.36/216,429.36 = 93,168.32/x
  3. Step 3: Cross multiply
    156,830.36x = 216,429.36 × 93,168.32
  4. Step 4: Simplify right side
    156,830.36x = 20,164,359,869.88
  5. Step 5: Solve for x
    x = 20,164,359,869.88/156,830.36
  6. Step 6: Final answer
    x = 128,574.34

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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.