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Finding the Fourth Proportional to 576,502,775.36, 864,753,886.16 and 139,803,386.24

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Solution

The fourth proportional to 576,502,775.36, 864,753,886.16 and 139,803,386.24 is: 209,705,012.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,502,775.36 : 864,753,886.16 = 139,803,386.24 : x
  2. Step 2: Convert to fraction form
    576,502,775.36/864,753,886.16 = 139,803,386.24/x
  3. Step 3: Cross multiply
    576,502,775.36x = 864,753,886.16 × 139,803,386.24
  4. Step 4: Simplify right side
    576,502,775.36x = 120,895,521,549,367,472
  5. Step 5: Solve for x
    x = 120,895,521,549,367,472/576,502,775.36
  6. Step 6: Final answer
    x = 209,705,012.22

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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.