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Finding the Fourth Proportional to 410,063.60, 614,980.20 and 129,666.80

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Solution

The fourth proportional to 410,063.60, 614,980.20 and 129,666.80 is: 194,463.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,063.60 : 614,980.20 = 129,666.80 : x
  2. Step 2: Convert to fraction form
    410,063.60/614,980.20 = 129,666.80/x
  3. Step 3: Cross multiply
    410,063.60x = 614,980.20 × 129,666.80
  4. Step 4: Simplify right side
    410,063.60x = 79,742,514,597.36
  5. Step 5: Solve for x
    x = 79,742,514,597.36/410,063.60
  6. Step 6: Final answer
    x = 194,463.77

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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.