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Finding the Fourth Proportional to 647,870,613.53, 894,678,923.28 and 612,575,035.63

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Solution

The fourth proportional to 647,870,613.53, 894,678,923.28 and 612,575,035.63 is: 845,937,386.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,870,613.53 : 894,678,923.28 = 612,575,035.63 : x
  2. Step 2: Convert to fraction form
    647,870,613.53/894,678,923.28 = 612,575,035.63/x
  3. Step 3: Cross multiply
    647,870,613.53x = 894,678,923.28 × 612,575,035.63
  4. Step 4: Simplify right side
    647,870,613.53x = 548,057,973,307,639,680
  5. Step 5: Solve for x
    x = 548,057,973,307,639,680/647,870,613.53
  6. Step 6: Final answer
    x = 845,937,386.05

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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.