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Finding the Fourth Proportional to 709,170,581.58, 978,916,553.23 and 426,926,141.18

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Solution

The fourth proportional to 709,170,581.58, 978,916,553.23 and 426,926,141.18 is: 589,315,289.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,170,581.58 : 978,916,553.23 = 426,926,141.18 : x
  2. Step 2: Convert to fraction form
    709,170,581.58/978,916,553.23 = 426,926,141.18/x
  3. Step 3: Cross multiply
    709,170,581.58x = 978,916,553.23 × 426,926,141.18
  4. Step 4: Simplify right side
    709,170,581.58x = 417,925,066,607,709,952
  5. Step 5: Solve for x
    x = 417,925,066,607,709,952/709,170,581.58
  6. Step 6: Final answer
    x = 589,315,289.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.