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Finding the Fourth Proportional to 340,909.10, 470,457.59 and 187,952.70

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Solution

The fourth proportional to 340,909.10, 470,457.59 and 187,952.70 is: 259,376.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,909.10 : 470,457.59 = 187,952.70 : x
  2. Step 2: Convert to fraction form
    340,909.10/470,457.59 = 187,952.70/x
  3. Step 3: Cross multiply
    340,909.10x = 470,457.59 × 187,952.70
  4. Step 4: Simplify right side
    340,909.10x = 88,423,773,336.23
  5. Step 5: Solve for x
    x = 88,423,773,336.23/340,909.10
  6. Step 6: Final answer
    x = 259,376.40

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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.