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Finding the Fourth Proportional to 638,189.60, 956,823.60 and 357,792.80

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Solution

The fourth proportional to 638,189.60, 956,823.60 and 357,792.80 is: 536,430.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,189.60 : 956,823.60 = 357,792.80 : x
  2. Step 2: Convert to fraction form
    638,189.60/956,823.60 = 357,792.80/x
  3. Step 3: Cross multiply
    638,189.60x = 956,823.60 × 357,792.80
  4. Step 4: Simplify right side
    638,189.60x = 342,344,594,950.08
  5. Step 5: Solve for x
    x = 342,344,594,950.08/638,189.60
  6. Step 6: Final answer
    x = 536,430.86

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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.