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Finding the Fourth Proportional to 672,961,613.56, 928,688,311.94 and 371,547,508

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Solution

The fourth proportional to 672,961,613.56, 928,688,311.94 and 371,547,508 is: 512,736,270.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,961,613.56 : 928,688,311.94 = 371,547,508 : x
  2. Step 2: Convert to fraction form
    672,961,613.56/928,688,311.94 = 371,547,508/x
  3. Step 3: Cross multiply
    672,961,613.56x = 928,688,311.94 × 371,547,508
  4. Step 4: Simplify right side
    672,961,613.56x = 345,051,828,010,033,664
  5. Step 5: Solve for x
    x = 345,051,828,010,033,664/672,961,613.56
  6. Step 6: Final answer
    x = 512,736,270.62

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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.