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Finding the Fourth Proportional to 70,572.86, 97,390.64 and 38,307.46

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Solution

The fourth proportional to 70,572.86, 97,390.64 and 38,307.46 is: 52,864.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,572.86 : 97,390.64 = 38,307.46 : x
  2. Step 2: Convert to fraction form
    70,572.86/97,390.64 = 38,307.46/x
  3. Step 3: Cross multiply
    70,572.86x = 97,390.64 × 38,307.46
  4. Step 4: Simplify right side
    70,572.86x = 3,730,788,152.35
  5. Step 5: Solve for x
    x = 3,730,788,152.35/70,572.86
  6. Step 6: Final answer
    x = 52,864.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.