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Finding the Fourth Proportional to 93,312,073.70, 139,968,110.55 and 47,878,460.90

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Solution

The fourth proportional to 93,312,073.70, 139,968,110.55 and 47,878,460.90 is: 71,817,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,073.70 : 139,968,110.55 = 47,878,460.90 : x
  2. Step 2: Convert to fraction form
    93,312,073.70/139,968,110.55 = 47,878,460.90/x
  3. Step 3: Cross multiply
    93,312,073.70x = 139,968,110.55 × 47,878,460.90
  4. Step 4: Simplify right side
    93,312,073.70x = 6,701,457,708,215,053
  5. Step 5: Solve for x
    x = 6,701,457,708,215,053/93,312,073.70
  6. Step 6: Final answer
    x = 71,817,691.35

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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.