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Finding the Fourth Proportional to 702,421.17, 968,533.17 and 518,925.23

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Solution

The fourth proportional to 702,421.17, 968,533.17 and 518,925.23 is: 715,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,421.17 : 968,533.17 = 518,925.23 : x
  2. Step 2: Convert to fraction form
    702,421.17/968,533.17 = 518,925.23/x
  3. Step 3: Cross multiply
    702,421.17x = 968,533.17 × 518,925.23
  4. Step 4: Simplify right side
    702,421.17x = 502,596,293,162.21
  5. Step 5: Solve for x
    x = 502,596,293,162.21/702,421.17
  6. Step 6: Final answer
    x = 715,519.85

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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.