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Finding the Fourth Proportional to 904,578,672.40, 1,356,868,008.60 and 812,745,667.60

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Solution

The fourth proportional to 904,578,672.40, 1,356,868,008.60 and 812,745,667.60 is: 1,219,118,501.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,578,672.40 : 1,356,868,008.60 = 812,745,667.60 : x
  2. Step 2: Convert to fraction form
    904,578,672.40/1,356,868,008.60 = 812,745,667.60/x
  3. Step 3: Cross multiply
    904,578,672.40x = 1,356,868,008.60 × 812,745,667.60
  4. Step 4: Simplify right side
    904,578,672.40x = 1,102,788,595,494,689,536
  5. Step 5: Solve for x
    x = 1,102,788,595,494,689,536/904,578,672.40
  6. Step 6: Final answer
    x = 1,219,118,501.40

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1.5x scale

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.