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Finding the Fourth Proportional to 201,473,688.80, 302,210,533.20 and 65,172,850.40

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Solution

The fourth proportional to 201,473,688.80, 302,210,533.20 and 65,172,850.40 is: 97,759,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,473,688.80 : 302,210,533.20 = 65,172,850.40 : x
  2. Step 2: Convert to fraction form
    201,473,688.80/302,210,533.20 = 65,172,850.40/x
  3. Step 3: Cross multiply
    201,473,688.80x = 302,210,533.20 × 65,172,850.40
  4. Step 4: Simplify right side
    201,473,688.80x = 19,695,921,869,547,832
  5. Step 5: Solve for x
    x = 19,695,921,869,547,832/201,473,688.80
  6. Step 6: Final answer
    x = 97,759,275.60

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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.