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Finding the Fourth Proportional to 356,005.40, 534,008.10 and 216,037.40

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Solution

The fourth proportional to 356,005.40, 534,008.10 and 216,037.40 is: 324,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,005.40 : 534,008.10 = 216,037.40 : x
  2. Step 2: Convert to fraction form
    356,005.40/534,008.10 = 216,037.40/x
  3. Step 3: Cross multiply
    356,005.40x = 534,008.10 × 216,037.40
  4. Step 4: Simplify right side
    356,005.40x = 115,365,721,502.94
  5. Step 5: Solve for x
    x = 115,365,721,502.94/356,005.40
  6. Step 6: Final answer
    x = 324,056.10

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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.