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Finding the Fourth Proportional to 525,129.30, 786,527.55 and 455,145.30

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Solution

The fourth proportional to 525,129.30, 786,527.55 and 455,145.30 is: 681,707.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,129.30 : 786,527.55 = 455,145.30 : x
  2. Step 2: Convert to fraction form
    525,129.30/786,527.55 = 455,145.30/x
  3. Step 3: Cross multiply
    525,129.30x = 786,527.55 × 455,145.30
  4. Step 4: Simplify right side
    525,129.30x = 357,984,317,703.02
  5. Step 5: Solve for x
    x = 357,984,317,703.02/525,129.30
  6. Step 6: Final answer
    x = 681,707.00

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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.