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Finding the Fourth Proportional to 520,136.92, 780,430.76 and 183,418.16

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Solution

The fourth proportional to 520,136.92, 780,430.76 and 183,418.16 is: 275,206.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,136.92 : 780,430.76 = 183,418.16 : x
  2. Step 2: Convert to fraction form
    520,136.92/780,430.76 = 183,418.16/x
  3. Step 3: Cross multiply
    520,136.92x = 780,430.76 × 183,418.16
  4. Step 4: Simplify right side
    520,136.92x = 143,145,173,089.51
  5. Step 5: Solve for x
    x = 143,145,173,089.51/520,136.92
  6. Step 6: Final answer
    x = 275,206.72

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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.