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Finding the Fourth Proportional to 343,259.57, 514,923.96 and 90,557.53

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Solution

The fourth proportional to 343,259.57, 514,923.96 and 90,557.53 is: 135,845.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,259.57 : 514,923.96 = 90,557.53 : x
  2. Step 2: Convert to fraction form
    343,259.57/514,923.96 = 90,557.53/x
  3. Step 3: Cross multiply
    343,259.57x = 514,923.96 × 90,557.53
  4. Step 4: Simplify right side
    343,259.57x = 46,630,241,955.42
  5. Step 5: Solve for x
    x = 46,630,241,955.42/343,259.57
  6. Step 6: Final answer
    x = 135,845.42

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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.