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Finding the Fourth Proportional to 326,712,031.40, 490,068,047.10 and 326,712,031.40

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Solution

The fourth proportional to 326,712,031.40, 490,068,047.10 and 326,712,031.40 is: 490,068,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,712,031.40 : 490,068,047.10 = 326,712,031.40 : x
  2. Step 2: Convert to fraction form
    326,712,031.40/490,068,047.10 = 326,712,031.40/x
  3. Step 3: Cross multiply
    326,712,031.40x = 490,068,047.10 × 326,712,031.40
  4. Step 4: Simplify right side
    326,712,031.40x = 160,111,127,192,271,872
  5. Step 5: Solve for x
    x = 160,111,127,192,271,872/326,712,031.40
  6. Step 6: Final answer
    x = 490,068,047.10

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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.