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Finding the Fourth Proportional to 93,312,101.70, 139,968,152.55 and 78,195,557.70

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Solution

The fourth proportional to 93,312,101.70, 139,968,152.55 and 78,195,557.70 is: 117,293,336.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,101.70 : 139,968,152.55 = 78,195,557.70 : x
  2. Step 2: Convert to fraction form
    93,312,101.70/139,968,152.55 = 78,195,557.70/x
  3. Step 3: Cross multiply
    93,312,101.70x = 139,968,152.55 × 78,195,557.70
  4. Step 4: Simplify right side
    93,312,101.70x = 10,944,887,748,885,928
  5. Step 5: Solve for x
    x = 10,944,887,748,885,928/93,312,101.70
  6. Step 6: Final answer
    x = 117,293,336.55

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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.