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Finding the Fourth Proportional to 93,312,129.80, 139,968,194.70 and 90,792,705.80

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Solution

The fourth proportional to 93,312,129.80, 139,968,194.70 and 90,792,705.80 is: 136,189,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,129.80 : 139,968,194.70 = 90,792,705.80 : x
  2. Step 2: Convert to fraction form
    93,312,129.80/139,968,194.70 = 90,792,705.80/x
  3. Step 3: Cross multiply
    93,312,129.80x = 139,968,194.70 × 90,792,705.80
  4. Step 4: Simplify right side
    93,312,129.80x = 12,708,091,122,754,218
  5. Step 5: Solve for x
    x = 12,708,091,122,754,218/93,312,129.80
  6. Step 6: Final answer
    x = 136,189,058.70

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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.