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Finding the Fourth Proportional to 506,720.40, 759,605.40 and 191,389.20

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Solution

The fourth proportional to 506,720.40, 759,605.40 and 191,389.20 is: 286,904.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,720.40 : 759,605.40 = 191,389.20 : x
  2. Step 2: Convert to fraction form
    506,720.40/759,605.40 = 191,389.20/x
  3. Step 3: Cross multiply
    506,720.40x = 759,605.40 × 191,389.20
  4. Step 4: Simplify right side
    506,720.40x = 145,380,269,821.68
  5. Step 5: Solve for x
    x = 145,380,269,821.68/506,720.40
  6. Step 6: Final answer
    x = 286,904.32

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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.