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Finding the Fourth Proportional to 654,856,989.84, 903,698,048.72 and 357,499,232

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Solution

The fourth proportional to 654,856,989.84, 903,698,048.72 and 357,499,232 is: 493,346,430.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,856,989.84 : 903,698,048.72 = 357,499,232 : x
  2. Step 2: Convert to fraction form
    654,856,989.84/903,698,048.72 = 357,499,232/x
  3. Step 3: Cross multiply
    654,856,989.84x = 903,698,048.72 × 357,499,232
  4. Step 4: Simplify right side
    654,856,989.84x = 323,071,358,377,298,624
  5. Step 5: Solve for x
    x = 323,071,358,377,298,624/654,856,989.84
  6. Step 6: Final answer
    x = 493,346,430.43

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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.