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Finding the Fourth Proportional to 862,676,622.66, 1,190,547,090 and 475,992,162.72

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Solution

The fourth proportional to 862,676,622.66, 1,190,547,090 and 475,992,162.72 is: 656,898,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,676,622.66 : 1,190,547,090 = 475,992,162.72 : x
  2. Step 2: Convert to fraction form
    862,676,622.66/1,190,547,090 = 475,992,162.72/x
  3. Step 3: Cross multiply
    862,676,622.66x = 1,190,547,090 × 475,992,162.72
  4. Step 4: Simplify right side
    862,676,622.66x = 566,691,084,189,102,528
  5. Step 5: Solve for x
    x = 566,691,084,189,102,528/862,676,622.66
  6. Step 6: Final answer
    x = 656,898,621.46

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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.