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Finding the Fourth Proportional to 384,176.71, 530,192.96 and 212,127.45

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Solution

The fourth proportional to 384,176.71, 530,192.96 and 212,127.45 is: 292,751.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,176.71 : 530,192.96 = 212,127.45 : x
  2. Step 2: Convert to fraction form
    384,176.71/530,192.96 = 212,127.45/x
  3. Step 3: Cross multiply
    384,176.71x = 530,192.96 × 212,127.45
  4. Step 4: Simplify right side
    384,176.71x = 112,468,480,612.75
  5. Step 5: Solve for x
    x = 112,468,480,612.75/384,176.71
  6. Step 6: Final answer
    x = 292,751.95

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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.