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Finding the Fourth Proportional to 356,140.40, 534,010.91 and 243,947.30

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Solution

The fourth proportional to 356,140.40, 534,010.91 and 243,947.30 is: 365,784.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,140.40 : 534,010.91 = 243,947.30 : x
  2. Step 2: Convert to fraction form
    356,140.40/534,010.91 = 243,947.30/x
  3. Step 3: Cross multiply
    356,140.40x = 534,010.91 × 243,947.30
  4. Step 4: Simplify right side
    356,140.40x = 130,270,519,665.04
  5. Step 5: Solve for x
    x = 130,270,519,665.04/356,140.40
  6. Step 6: Final answer
    x = 365,784.17

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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.