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Finding the Fourth Proportional to 93,312,092.80, 139,968,139.20 and 90,792,668.80

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Solution

The fourth proportional to 93,312,092.80, 139,968,139.20 and 90,792,668.80 is: 136,189,003.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,092.80 : 139,968,139.20 = 90,792,668.80 : x
  2. Step 2: Convert to fraction form
    93,312,092.80/139,968,139.20 = 90,792,668.80/x
  3. Step 3: Cross multiply
    93,312,092.80x = 139,968,139.20 × 90,792,668.80
  4. Step 4: Simplify right side
    93,312,092.80x = 12,708,080,904,937,896
  5. Step 5: Solve for x
    x = 12,708,080,904,937,896/93,312,092.80
  6. Step 6: Final answer
    x = 136,189,003.20

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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.