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Finding the Fourth Proportional to 618,688.40, 926,835.52 and 347,994.19

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Solution

The fourth proportional to 618,688.40, 926,835.52 and 347,994.19 is: 521,317.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,688.40 : 926,835.52 = 347,994.19 : x
  2. Step 2: Convert to fraction form
    618,688.40/926,835.52 = 347,994.19/x
  3. Step 3: Cross multiply
    618,688.40x = 926,835.52 × 347,994.19
  4. Step 4: Simplify right side
    618,688.40x = 322,533,376,045.63
  5. Step 5: Solve for x
    x = 322,533,376,045.63/618,688.40
  6. Step 6: Final answer
    x = 521,317.96

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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.