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Finding the Fourth Proportional to 42,403.20, 59,446.40 and 42,403.20

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Solution

The fourth proportional to 42,403.20, 59,446.40 and 42,403.20 is: 59,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,403.20 : 59,446.40 = 42,403.20 : x
  2. Step 2: Convert to fraction form
    42,403.20/59,446.40 = 42,403.20/x
  3. Step 3: Cross multiply
    42,403.20x = 59,446.40 × 42,403.20
  4. Step 4: Simplify right side
    42,403.20x = 2,520,717,588.48
  5. Step 5: Solve for x
    x = 2,520,717,588.48/42,403.20
  6. Step 6: Final answer
    x = 59,446.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.