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Finding the Fourth Proportional to 426,059,246.70, 639,088,870.05 and 426,059,246.70

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Solution

The fourth proportional to 426,059,246.70, 639,088,870.05 and 426,059,246.70 is: 639,088,870.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,059,246.70 : 639,088,870.05 = 426,059,246.70 : x
  2. Step 2: Convert to fraction form
    426,059,246.70/639,088,870.05 = 426,059,246.70/x
  3. Step 3: Cross multiply
    426,059,246.70x = 639,088,870.05 × 426,059,246.70
  4. Step 4: Simplify right side
    426,059,246.70x = 272,289,722,547,857,152
  5. Step 5: Solve for x
    x = 272,289,722,547,857,152/426,059,246.70
  6. Step 6: Final answer
    x = 639,088,870.05

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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.