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Finding the Fourth Proportional to 918,153,965.80, 1,377,230,948.70 and 918,153,965.80

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Solution

The fourth proportional to 918,153,965.80, 1,377,230,948.70 and 918,153,965.80 is: 1,377,230,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,153,965.80 : 1,377,230,948.70 = 918,153,965.80 : x
  2. Step 2: Convert to fraction form
    918,153,965.80/1,377,230,948.70 = 918,153,965.80/x
  3. Step 3: Cross multiply
    918,153,965.80x = 1,377,230,948.70 × 918,153,965.80
  4. Step 4: Simplify right side
    918,153,965.80x = 1,264,510,057,371,401,216
  5. Step 5: Solve for x
    x = 1,264,510,057,371,401,216/918,153,965.80
  6. Step 6: Final answer
    x = 1,377,230,948.70

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Double scale
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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.