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Finding the Fourth Proportional to 19,319,239.40, 28,978,859.10 and 9,241,543.40

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Solution

The fourth proportional to 19,319,239.40, 28,978,859.10 and 9,241,543.40 is: 13,862,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319,239.40 : 28,978,859.10 = 9,241,543.40 : x
  2. Step 2: Convert to fraction form
    19,319,239.40/28,978,859.10 = 9,241,543.40/x
  3. Step 3: Cross multiply
    19,319,239.40x = 28,978,859.10 × 9,241,543.40
  4. Step 4: Simplify right side
    19,319,239.40x = 267,809,384,055,134.97
  5. Step 5: Solve for x
    x = 267,809,384,055,134.97/19,319,239.40
  6. Step 6: Final answer
    x = 13,862,315.10

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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.