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Finding the Fourth Proportional to 7,230,931.62, 9,959,530.14 and 5,389,488.57

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Solution

The fourth proportional to 7,230,931.62, 9,959,530.14 and 5,389,488.57 is: 7,423,216.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230,931.62 : 9,959,530.14 = 5,389,488.57 : x
  2. Step 2: Convert to fraction form
    7,230,931.62/9,959,530.14 = 5,389,488.57/x
  3. Step 3: Cross multiply
    7,230,931.62x = 9,959,530.14 × 5,389,488.57
  4. Step 4: Simplify right side
    7,230,931.62x = 53,676,773,852,100.51
  5. Step 5: Solve for x
    x = 53,676,773,852,100.51/7,230,931.62
  6. Step 6: Final answer
    x = 7,423,216.91

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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.