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Finding the Fourth Proportional to 172,041.60, 257,552.10 and 127,864.20

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Solution

The fourth proportional to 172,041.60, 257,552.10 and 127,864.20 is: 191,417.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,041.60 : 257,552.10 = 127,864.20 : x
  2. Step 2: Convert to fraction form
    172,041.60/257,552.10 = 127,864.20/x
  3. Step 3: Cross multiply
    172,041.60x = 257,552.10 × 127,864.20
  4. Step 4: Simplify right side
    172,041.60x = 32,931,693,224.82
  5. Step 5: Solve for x
    x = 32,931,693,224.82/172,041.60
  6. Step 6: Final answer
    x = 191,417.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.