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Finding the Fourth Proportional to 772,812.99, 1,066,114.67 and 514,809.87

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Solution

The fourth proportional to 772,812.99, 1,066,114.67 and 514,809.87 is: 710,192.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,812.99 : 1,066,114.67 = 514,809.87 : x
  2. Step 2: Convert to fraction form
    772,812.99/1,066,114.67 = 514,809.87/x
  3. Step 3: Cross multiply
    772,812.99x = 1,066,114.67 × 514,809.87
  4. Step 4: Simplify right side
    772,812.99x = 548,846,354,667.79
  5. Step 5: Solve for x
    x = 548,846,354,667.79/772,812.99
  6. Step 6: Final answer
    x = 710,192.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.