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Finding the Fourth Proportional to 93,312,894.80, 139,969,342.20 and 57,431,320.40

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Solution

The fourth proportional to 93,312,894.80, 139,969,342.20 and 57,431,320.40 is: 86,146,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312,894.80 : 139,969,342.20 = 57,431,320.40 : x
  2. Step 2: Convert to fraction form
    93,312,894.80/139,969,342.20 = 57,431,320.40/x
  3. Step 3: Cross multiply
    93,312,894.80x = 139,969,342.20 × 57,431,320.40
  4. Step 4: Simplify right side
    93,312,894.80x = 8,038,624,138,065,440
  5. Step 5: Solve for x
    x = 8,038,624,138,065,440/93,312,894.80
  6. Step 6: Final answer
    x = 86,146,980.60

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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.