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Finding the Fourth Proportional to 709,501,330.12, 972,000,573.90 and 682,974,501.81

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Solution

The fourth proportional to 709,501,330.12, 972,000,573.90 and 682,974,501.81 is: 935,659,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,501,330.12 : 972,000,573.90 = 682,974,501.81 : x
  2. Step 2: Convert to fraction form
    709,501,330.12/972,000,573.90 = 682,974,501.81/x
  3. Step 3: Cross multiply
    709,501,330.12x = 972,000,573.90 × 682,974,501.81
  4. Step 4: Simplify right side
    709,501,330.12x = 663,851,607,718,386,560
  5. Step 5: Solve for x
    x = 663,851,607,718,386,560/709,501,330.12
  6. Step 6: Final answer
    x = 935,659,426.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.