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Finding the Fourth Proportional to 191,830,892.60, 287,746,338.90 and 134,388,025.40

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Solution

The fourth proportional to 191,830,892.60, 287,746,338.90 and 134,388,025.40 is: 201,582,038.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,830,892.60 : 287,746,338.90 = 134,388,025.40 : x
  2. Step 2: Convert to fraction form
    191,830,892.60/287,746,338.90 = 134,388,025.40/x
  3. Step 3: Cross multiply
    191,830,892.60x = 287,746,338.90 × 134,388,025.40
  4. Step 4: Simplify right side
    191,830,892.60x = 38,669,662,300,850,208
  5. Step 5: Solve for x
    x = 38,669,662,300,850,208/191,830,892.60
  6. Step 6: Final answer
    x = 201,582,038.10

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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.