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Finding the Fourth Proportional to 191,808,908.80, 287,382,688.80 and 89,362,830.40

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Solution

The fourth proportional to 191,808,908.80, 287,382,688.80 and 89,362,830.40 is: 133,890,186.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,808,908.80 : 287,382,688.80 = 89,362,830.40 : x
  2. Step 2: Convert to fraction form
    191,808,908.80/287,382,688.80 = 89,362,830.40/x
  3. Step 3: Cross multiply
    191,808,908.80x = 287,382,688.80 × 89,362,830.40
  4. Step 4: Simplify right side
    191,808,908.80x = 25,681,330,479,130,384
  5. Step 5: Solve for x
    x = 25,681,330,479,130,384/191,808,908.80
  6. Step 6: Final answer
    x = 133,890,186.02

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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.