Home / 82,912,123.40-124,368,185.10-39,759,114.20

Finding the Fourth Proportional to 82,912,123.40, 124,368,185.10 and 39,759,114.20

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Solution

The fourth proportional to 82,912,123.40, 124,368,185.10 and 39,759,114.20 is: 59,638,671.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,912,123.40 : 124,368,185.10 = 39,759,114.20 : x
  2. Step 2: Convert to fraction form
    82,912,123.40/124,368,185.10 = 39,759,114.20/x
  3. Step 3: Cross multiply
    82,912,123.40x = 124,368,185.10 × 39,759,114.20
  4. Step 4: Simplify right side
    82,912,123.40x = 4,944,768,874,237,639
  5. Step 5: Solve for x
    x = 4,944,768,874,237,639/82,912,123.40
  6. Step 6: Final answer
    x = 59,638,671.30

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Double scale
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Similar ratio
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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.