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Finding the Fourth Proportional to 916,993,710.20, 1,375,490,565.30 and 626,756,065.40

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Solution

The fourth proportional to 916,993,710.20, 1,375,490,565.30 and 626,756,065.40 is: 940,134,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,993,710.20 : 1,375,490,565.30 = 626,756,065.40 : x
  2. Step 2: Convert to fraction form
    916,993,710.20/1,375,490,565.30 = 626,756,065.40/x
  3. Step 3: Cross multiply
    916,993,710.20x = 1,375,490,565.30 × 626,756,065.40
  4. Step 4: Simplify right side
    916,993,710.20x = 862,097,054,702,249,728
  5. Step 5: Solve for x
    x = 862,097,054,702,249,728/916,993,710.20
  6. Step 6: Final answer
    x = 940,134,098.10

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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.