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Finding the Fourth Proportional to 718,440.57, 990,417.78 and 565,212.67

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Solution

The fourth proportional to 718,440.57, 990,417.78 and 565,212.67 is: 779,183.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,440.57 : 990,417.78 = 565,212.67 : x
  2. Step 2: Convert to fraction form
    718,440.57/990,417.78 = 565,212.67/x
  3. Step 3: Cross multiply
    718,440.57x = 990,417.78 × 565,212.67
  4. Step 4: Simplify right side
    718,440.57x = 559,796,675,373.23
  5. Step 5: Solve for x
    x = 559,796,675,373.23/718,440.57
  6. Step 6: Final answer
    x = 779,183.00

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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.