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Finding the Fourth Proportional to 543,457.40, 815,186.10 and 506,593.40

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Solution

The fourth proportional to 543,457.40, 815,186.10 and 506,593.40 is: 759,890.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,457.40 : 815,186.10 = 506,593.40 : x
  2. Step 2: Convert to fraction form
    543,457.40/815,186.10 = 506,593.40/x
  3. Step 3: Cross multiply
    543,457.40x = 815,186.10 × 506,593.40
  4. Step 4: Simplify right side
    543,457.40x = 412,967,898,031.74
  5. Step 5: Solve for x
    x = 412,967,898,031.74/543,457.40
  6. Step 6: Final answer
    x = 759,890.10

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Half scale
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Double scale
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Similar ratio
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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.