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Finding the Fourth Proportional to 406,472.40, 608,542.20 and 249,008.40

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Solution

The fourth proportional to 406,472.40, 608,542.20 and 249,008.40 is: 372,798.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,472.40 : 608,542.20 = 249,008.40 : x
  2. Step 2: Convert to fraction form
    406,472.40/608,542.20 = 249,008.40/x
  3. Step 3: Cross multiply
    406,472.40x = 608,542.20 × 249,008.40
  4. Step 4: Simplify right side
    406,472.40x = 151,532,119,554.48
  5. Step 5: Solve for x
    x = 151,532,119,554.48/406,472.40
  6. Step 6: Final answer
    x = 372,798.05

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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.